diff --git a/fenix/app/src/main/res/raw/initial_experiments.json b/fenix/app/src/main/res/raw/initial_experiments.json
index 09a71345e1dd..bf4722120647 100644
--- a/fenix/app/src/main/res/raw/initial_experiments.json
+++ b/fenix/app/src/main/res/raw/initial_experiments.json
@@ -2,150 +2,429 @@
   "data": [
     {
       "schemaVersion": "1.12.0",
-      "slug": "android-onboarding-redesign",
-      "id": "android-onboarding-redesign",
+      "slug": "long-term-holdback-2025-h1-growth-android",
+      "id": "long-term-holdback-2025-h1-growth-android",
       "arguments": {},
-      "application": "org.mozilla.firefox_beta",
+      "application": "org.mozilla.firefox",
       "appName": "fenix",
-      "appId": "org.mozilla.firefox_beta",
-      "channel": "beta",
-      "userFacingName": "[beta] Android Onboarding Redesign",
-      "userFacingDescription": "Testing a new onboarding experience.",
+      "appId": "org.mozilla.firefox",
+      "channel": "release",
+      "userFacingName": "Long term holdback 2025 H1 Growth Android",
+      "userFacingDescription": "Long-term holdback for growth experiments",
       "isEnrollmentPaused": false,
       "isRollout": false,
       "bucketConfig": {
         "randomizationUnit": "nimbus_id",
-        "namespace": "fenix-juno-onboarding-beta-1",
+        "namespace": "fenix-no-feature-fenix-release-4",
         "start": 0,
         "count": 10000,
         "total": 10000
       },
       "featureIds": [
-        "juno-onboarding"
+        "no-feature-fenix"
       ],
       "probeSets": [],
       "outcomes": [],
       "branches": [
         {
-          "slug": "control",
-          "ratio": 1,
+          "slug": "delivery",
+          "ratio": 19,
           "feature": {
-            "featureId": "juno-onboarding",
-            "enabled": true,
-            "value": {
-              "enabled": false
+            "featureId": "this-is-included-for-mobile-pre-96-support",
+            "enabled": false,
+            "value": {}
+          },
+          "features": [
+            {
+              "featureId": "no-feature-fenix",
+              "enabled": true,
+              "value": {}
             }
-          }
+          ]
         },
         {
-          "slug": "treatment-a",
+          "slug": "holdback",
           "ratio": 1,
           "feature": {
-            "featureId": "juno-onboarding",
-            "enabled": true,
-            "value": {
-              "enabled": true
+            "featureId": "this-is-included-for-mobile-pre-96-support",
+            "enabled": false,
+            "value": {}
+          },
+          "features": [
+            {
+              "featureId": "no-feature-fenix",
+              "enabled": true,
+              "value": {}
             }
-          }
+          ]
         }
       ],
-      "targeting": "((is_already_enrolled) || ((isFirstRun == 'true') && (app_version|versionCompare('112.!') >= 0)))",
-      "startDate": "2023-04-04",
-      "enrollmentEndDate": "2023-04-11",
+      "targeting": "((is_already_enrolled) || ((app_version|versionCompare('123.!') >= 0)))",
+      "startDate": "2024-12-12",
+      "enrollmentEndDate": null,
       "endDate": null,
-      "proposedDuration": 7,
-      "proposedEnrollment": 7,
-      "referenceBranch": "control",
-      "featureValidationOptOut": false
+      "proposedDuration": 100,
+      "proposedEnrollment": 100,
+      "referenceBranch": "holdback",
+      "featureValidationOptOut": false,
+      "localizations": null,
+      "locales": null,
+      "publishedDate": "2024-12-12T20:20:50.686475Z",
+      "isFirefoxLabsOptIn": false,
+      "firefoxLabsTitle": null,
+      "firefoxLabsDescription": null,
+      "firefoxLabsDescriptionLinks": null,
+      "firefoxLabsGroup": null,
+      "requiresRestart": false
     },
     {
       "schemaVersion": "1.12.0",
-      "slug": "fx-release-android-re-engagement-notifications-ab-experiment-v112",
-      "id": "fx-release-android-re-engagement-notifications-ab-experiment-v112",
+      "slug": "onboarding-customisation-options-release",
+      "id": "onboarding-customisation-options-release",
       "arguments": {},
       "application": "org.mozilla.firefox",
       "appName": "fenix",
       "appId": "org.mozilla.firefox",
       "channel": "release",
-      "userFacingName": "Fx Release - Android re-engagement notifications A/B experiment v112",
-      "userFacingDescription": "A/B message content test for Firefox 112",
-      "isEnrollmentPaused": true,
+      "userFacingName": "Onboarding customisation options Release",
+      "userFacingDescription": "Test customisation options in Onboarding v2",
+      "isEnrollmentPaused": false,
       "isRollout": false,
       "bucketConfig": {
         "randomizationUnit": "nimbus_id",
-        "namespace": "fenix-re-engagement-notification-release-2",
+        "namespace": "fenix-juno-onboarding-release-11",
         "start": 0,
         "count": 10000,
         "total": 10000
       },
       "featureIds": [
-        "re-engagement-notification"
+        "juno-onboarding"
       ],
       "probeSets": [],
-      "outcomes": [],
+      "outcomes": [
+        {
+          "slug": "onboarding",
+          "priority": "primary"
+        },
+        {
+          "slug": "default-browser",
+          "priority": "secondary"
+        }
+      ],
       "branches": [
         {
           "slug": "control",
           "ratio": 1,
           "feature": {
-            "featureId": "re-engagement-notification",
-            "enabled": true,
-            "value": {
+            "featureId": "this-is-included-for-mobile-pre-96-support",
+            "enabled": false,
+            "value": {}
+          },
+          "features": [
+            {
+              "featureId": "juno-onboarding",
               "enabled": true,
-              "type": 0
+              "value": {}
             }
-          }
+          ]
         },
         {
           "slug": "treatment-a",
           "ratio": 1,
           "feature": {
-            "featureId": "re-engagement-notification",
-            "enabled": true,
-            "value": {
+            "featureId": "this-is-included-for-mobile-pre-96-support",
+            "enabled": false,
+            "value": {}
+          },
+          "features": [
+            {
+              "featureId": "juno-onboarding",
               "enabled": true,
-              "type": 1
+              "value": {
+                "cards": {
+                  "theme-selection": {
+                    "card-type": "theme-selection",
+                    "title": "onboarding_customize_theme_title",
+                    "body": "onboarding_customize_theme_description",
+                    "image-res": "ic_pick_a_theme",
+                    "ordering": 40,
+                    "primary-button-label": "onboarding_save_and_continue_button",
+                    "extra-data": {
+                      "customization-theme-data": [
+                        {
+                          "theme-type": "theme-system",
+                          "label": "onboarding_customize_theme_system_option",
+                          "image-res": "ic_pick_a_theme_system_auto"
+                        },
+                        {
+                          "theme-type": "theme-light",
+                          "label": "onboarding_customize_theme_light_option",
+                          "image-res": "ic_pick_a_theme_light"
+                        },
+                        {
+                          "theme-type": "theme-dark",
+                          "label": "onboarding_customize_theme_dark_option",
+                          "image-res": "ic_pick_a_theme_dark"
+                        }
+                      ]
+                    }
+                  },
+                  "toolbar-placement": {
+                    "card-type": "toolbar-placement",
+                    "title": "onboarding_customize_toolbar_title",
+                    "body": "onboarding_customize_toolbar_description",
+                    "image-res": "ic_onboarding_customize_toolbar",
+                    "ordering": 50,
+                    "primary-button-label": "onboarding_save_and_start_button",
+                    "extra-data": {
+                      "customization-toolbar-data": [
+                        {
+                          "toolbar-type": "toolbar-top",
+                          "label": "onboarding_customize_toolbar_top_option",
+                          "image-res": "ic_onboarding_top_toolbar"
+                        },
+                        {
+                          "toolbar-type": "toolbar-bottom",
+                          "label": "onboarding_customize_toolbar_bottom_option",
+                          "image-res": "ic_onboarding_bottom_toolbar"
+                        }
+                      ]
+                    }
+                  }
+                }
+              }
             }
-          }
+          ]
         },
         {
           "slug": "treatment-b",
           "ratio": 1,
           "feature": {
-            "featureId": "re-engagement-notification",
-            "enabled": true,
-            "value": {
+            "featureId": "this-is-included-for-mobile-pre-96-support",
+            "enabled": false,
+            "value": {}
+          },
+          "features": [
+            {
+              "featureId": "juno-onboarding",
               "enabled": true,
-              "type": 2
+              "value": {
+                "cards": {
+                  "theme-selection": {
+                    "card-type": "theme-selection",
+                    "title": "onboarding_customize_theme_title",
+                    "body": "onboarding_customize_theme_description",
+                    "image-res": "ic_pick_a_theme",
+                    "ordering": 40,
+                    "primary-button-label": "onboarding_save_and_continue_button",
+                    "extra-data": {
+                      "customization-theme-data": [
+                        {
+                          "theme-type": "theme-system",
+                          "label": "onboarding_customize_theme_system_option",
+                          "image-res": "ic_pick_a_theme_system_auto"
+                        },
+                        {
+                          "theme-type": "theme-light",
+                          "label": "onboarding_customize_theme_light_option",
+                          "image-res": "ic_pick_a_theme_light"
+                        },
+                        {
+                          "theme-type": "theme-dark",
+                          "label": "onboarding_customize_theme_dark_option",
+                          "image-res": "ic_pick_a_theme_dark"
+                        }
+                      ]
+                    }
+                  },
+                  "toolbar-placement": {
+                    "card-type": "toolbar-placement",
+                    "title": "onboarding_customize_toolbar_title",
+                    "body": "onboarding_customize_toolbar_description",
+                    "image-res": "ic_onboarding_customize_toolbar",
+                    "ordering": 50,
+                    "primary-button-label": "onboarding_save_and_continue_button",
+                    "extra-data": {
+                      "customization-toolbar-data": [
+                        {
+                          "toolbar-type": "toolbar-top",
+                          "label": "onboarding_customize_toolbar_top_option",
+                          "image-res": "ic_onboarding_top_toolbar"
+                        },
+                        {
+                          "toolbar-type": "toolbar-bottom",
+                          "label": "onboarding_customize_toolbar_bottom_option",
+                          "image-res": "ic_onboarding_bottom_toolbar"
+                        }
+                      ]
+                    }
+                  },
+                  "add-ons": {
+                    "title": "onboarding_add_on_header",
+                    "card-type": "add-ons",
+                    "body": "onboarding_add_on_sub_header",
+                    "image-res": "ic_onboarding_add_ons",
+                    "ordering": 60,
+                    "primary-button-label": "onboarding_add_on_start_browsing_button_2",
+                    "extra-data": {
+                      "add-ons-data": [
+                        {
+                          "id": "jid1-MnnxcxisBPnSXQ@jetpack",
+                          "install-url": "https://addons.mozilla.org/firefox/downloads/file/4321653/privacy_badger17-2024.7.17.xpi",
+                          "name": "onboarding_add_on_privacy_badger_name",
+                          "description": "onboarding_add_on_privacy_badger_description",
+                          "icon-res": "ic_add_on_privacy_badger",
+                          "average-rating": "4.8",
+                          "review-count": "2,545"
+                        },
+                        {
+                          "id": "addon@darkreader.org",
+                          "install-url": "https://addons.mozilla.org/firefox/downloads/file/4359254/darkreader-4.9.94.xpi",
+                          "name": "onboarding_add_on_dark_reader_name",
+                          "description": "onboarding_add_on_dark_reader_description",
+                          "icon-res": "ic_add_on_dark_reader",
+                          "average-rating": "4.50",
+                          "review-count": "5,964"
+                        },
+                        {
+                          "id": "{2e5ff8c8-32fe-46d0-9fc8-6b8986621f3c}",
+                          "install-url": "https://addons.mozilla.org/firefox/downloads/file/4416342/search_by_image-8.1.0.xpi",
+                          "name": "onboarding_add_on_search_by_image_name",
+                          "description": "onboarding_add_on_search_by_image_description",
+                          "icon-res": "ic_add_on_search_by_image",
+                          "average-rating": "4.61",
+                          "review-count": "1,563"
+                        }
+                      ]
+                    }
+                  }
+                }
+              }
             }
-          }
+          ]
+        },
+        {
+          "slug": "treatment-c",
+          "ratio": 1,
+          "feature": {
+            "featureId": "this-is-included-for-mobile-pre-96-support",
+            "enabled": false,
+            "value": {}
+          },
+          "features": [
+            {
+              "featureId": "juno-onboarding",
+              "enabled": true,
+              "value": {
+                "cards": {
+                  "theme-selection": {
+                    "card-type": "theme-selection",
+                    "title": "onboarding_customize_theme_title",
+                    "body": "onboarding_customize_theme_description",
+                    "image-res": "ic_pick_a_theme",
+                    "ordering": 40,
+                    "primary-button-label": "onboarding_save_and_start_button",
+                    "extra-data": {
+                      "customization-theme-data": [
+                        {
+                          "theme-type": "theme-system",
+                          "label": "onboarding_customize_theme_system_option",
+                          "image-res": "ic_pick_a_theme_system_auto"
+                        },
+                        {
+                          "theme-type": "theme-light",
+                          "label": "onboarding_customize_theme_light_option",
+                          "image-res": "ic_pick_a_theme_light"
+                        },
+                        {
+                          "theme-type": "theme-dark",
+                          "label": "onboarding_customize_theme_dark_option",
+                          "image-res": "ic_pick_a_theme_dark"
+                        }
+                      ]
+                    }
+                  }
+                }
+              }
+            }
+          ]
+        },
+        {
+          "slug": "treatment-d",
+          "ratio": 1,
+          "feature": {
+            "featureId": "this-is-included-for-mobile-pre-96-support",
+            "enabled": false,
+            "value": {}
+          },
+          "features": [
+            {
+              "featureId": "juno-onboarding",
+              "enabled": true,
+              "value": {
+                "cards": {
+                  "toolbar-placement": {
+                    "card-type": "toolbar-placement",
+                    "title": "onboarding_customize_toolbar_title",
+                    "body": "onboarding_customize_toolbar_description",
+                    "image-res": "ic_onboarding_customize_toolbar",
+                    "ordering": 40,
+                    "primary-button-label": "onboarding_save_and_start_button",
+                    "extra-data": {
+                      "customization-toolbar-data": [
+                        {
+                          "toolbar-type": "toolbar-top",
+                          "label": "onboarding_customize_toolbar_top_option",
+                          "image-res": "ic_onboarding_top_toolbar"
+                        },
+                        {
+                          "toolbar-type": "toolbar-bottom",
+                          "label": "onboarding_customize_toolbar_bottom_option",
+                          "image-res": "ic_onboarding_bottom_toolbar"
+                        }
+                      ]
+                    }
+                  }
+                }
+              }
+            }
+          ]
         }
       ],
-      "targeting": "(app_version|versionCompare('112.*') <= 0) && ((is_already_enrolled) || ((isFirstRun == 'true') && (app_version|versionCompare('112.!') >= 0)))",
-      "startDate": "2023-03-28",
-      "enrollmentEndDate": "2023-04-12",
+      "targeting": "((is_already_enrolled) || ((isFirstRun == 'true') && (app_version|versionCompare('135.!') >= 0) && (enrollments_map['long-term-holdback-2025-h1-growth-android'] == 'delivery')))",
+      "startDate": "2025-01-24",
+      "enrollmentEndDate": null,
       "endDate": null,
-      "proposedDuration": 28,
-      "proposedEnrollment": 14,
+      "proposedDuration": 35,
+      "proposedEnrollment": 21,
       "referenceBranch": "control",
-      "featureValidationOptOut": false
+      "featureValidationOptOut": false,
+      "localizations": null,
+      "locales": null,
+      "publishedDate": "2025-01-24T21:43:57.001480Z",
+      "isFirefoxLabsOptIn": false,
+      "firefoxLabsTitle": null,
+      "firefoxLabsDescription": null,
+      "firefoxLabsDescriptionLinks": null,
+      "firefoxLabsGroup": null,
+      "requiresRestart": false
     },
     {
       "schemaVersion": "1.12.0",
-      "slug": "release-android-onboarding-redesign",
-      "id": "release-android-onboarding-redesign",
+      "slug": "promote-add-ons-in-onboarding-release",
+      "id": "promote-add-ons-in-onboarding-release",
       "arguments": {},
       "application": "org.mozilla.firefox",
       "appName": "fenix",
       "appId": "org.mozilla.firefox",
       "channel": "release",
-      "userFacingName": "[release] Android Onboarding Redesign",
-      "userFacingDescription": "Testing a new onboarding experience.",
-      "isEnrollmentPaused": false,
+      "userFacingName": "Promote Add Ons in Onboarding - Release",
+      "userFacingDescription": "Test Promoting Add Ons in Onboarding v2",
+      "isEnrollmentPaused": true,
       "isRollout": false,
       "bucketConfig": {
         "randomizationUnit": "nimbus_id",
-        "namespace": "fenix-juno-onboarding-release-1",
+        "namespace": "fenix-juno-onboarding-release-10",
         "start": 0,
         "count": 10000,
         "total": 10000
@@ -156,8 +435,16 @@
       "probeSets": [],
       "outcomes": [
         {
-          "slug": "default-browser",
+          "slug": "onboarding",
           "priority": "primary"
+        },
+        {
+          "slug": "sponsored_tiles",
+          "priority": "secondary"
+        },
+        {
+          "slug": "default-browser",
+          "priority": "secondary"
         }
       ],
       "branches": [
@@ -165,33 +452,152 @@
           "slug": "control",
           "ratio": 1,
           "feature": {
-            "featureId": "juno-onboarding",
-            "enabled": true,
-            "value": {
-              "enabled": false
+            "featureId": "this-is-included-for-mobile-pre-96-support",
+            "enabled": false,
+            "value": {}
+          },
+          "features": [
+            {
+              "featureId": "juno-onboarding",
+              "enabled": true,
+              "value": {}
             }
-          }
+          ]
         },
         {
           "slug": "treatment-a",
           "ratio": 1,
           "feature": {
-            "featureId": "juno-onboarding",
-            "enabled": true,
-            "value": {
-              "enabled": true
+            "featureId": "this-is-included-for-mobile-pre-96-support",
+            "enabled": false,
+            "value": {}
+          },
+          "features": [
+            {
+              "featureId": "juno-onboarding",
+              "enabled": true,
+              "value": {
+                "cards": {
+                  "add-ons": {
+                    "title": "onboarding_add_on_header",
+                    "card-type": "add-ons",
+                    "body": "onboarding_add_on_sub_header",
+                    "image-res": "ic_onboarding_add_ons",
+                    "ordering": 40,
+                    "primary-button-label": "onboarding_add_on_start_browsing_button_2",
+                    "extra-data": {
+                      "add-ons-data": [
+                        {
+                          "id": "uBlock0@raymondhill.net",
+                          "install-url": "https://addons.mozilla.org/firefox/downloads/file/4359936/ublock_origin-1.60.0.xpi",
+                          "name": "onboarding_add_on_ublock_name",
+                          "description": "onboarding_add_on_ublock_description",
+                          "icon-res": "ic_add_on_ublock",
+                          "average-rating": "4.79",
+                          "review-count": "18,811"
+                        },
+                        {
+                          "id": "jid1-MnnxcxisBPnSXQ@jetpack",
+                          "install-url": "https://addons.mozilla.org/firefox/downloads/file/4321653/privacy_badger17-2024.7.17.xpi",
+                          "name": "onboarding_add_on_privacy_badger_name",
+                          "description": "onboarding_add_on_privacy_badger_description",
+                          "icon-res": "ic_add_on_privacy_badger",
+                          "average-rating": "4.8",
+                          "review-count": "2,545"
+                        },
+                        {
+                          "id": "{2e5ff8c8-32fe-46d0-9fc8-6b8986621f3c}",
+                          "install-url": "https://addons.mozilla.org/firefox/downloads/file/4309046/search_by_image-7.1.0.xpi",
+                          "name": "onboarding_add_on_search_by_image_name",
+                          "description": "onboarding_add_on_search_by_image_description",
+                          "icon-res": "ic_add_on_search_by_image",
+                          "average-rating": "4.61",
+                          "review-count": "1,563"
+                        }
+                      ]
+                    }
+                  }
+                }
+              }
+            }
+          ]
+        },
+        {
+          "slug": "treatment-b",
+          "ratio": 1,
+          "feature": {
+            "featureId": "this-is-included-for-mobile-pre-96-support",
+            "enabled": false,
+            "value": {}
+          },
+          "features": [
+            {
+              "featureId": "juno-onboarding",
+              "enabled": true,
+              "value": {
+                "cards": {
+                  "add-ons": {
+                    "title": "onboarding_add_on_header",
+                    "card-type": "add-ons",
+                    "body": "onboarding_add_on_sub_header",
+                    "image-res": "ic_onboarding_add_ons",
+                    "ordering": 40,
+                    "primary-button-label": "onboarding_add_on_start_browsing_button_2",
+                    "extra-data": {
+                      "add-ons-data": [
+                        {
+                          "id": "jid1-MnnxcxisBPnSXQ@jetpack",
+                          "install-url": "https://addons.mozilla.org/firefox/downloads/file/4321653/privacy_badger17-2024.7.17.xpi",
+                          "name": "onboarding_add_on_privacy_badger_name",
+                          "description": "onboarding_add_on_privacy_badger_description",
+                          "icon-res": "ic_add_on_privacy_badger",
+                          "average-rating": "4.8",
+                          "review-count": "2,545"
+                        },
+                        {
+                          "id": "addon@darkreader.org",
+                          "install-url": "https://addons.mozilla.org/firefox/downloads/file/4359254/darkreader-4.9.94.xpi",
+                          "name": "onboarding_add_on_dark_reader_name",
+                          "description": "onboarding_add_on_dark_reader_description",
+                          "icon-res": "ic_add_on_dark_reader",
+                          "average-rating": "4.50",
+                          "review-count": "5,964"
+                        },
+                        {
+                          "id": "{2e5ff8c8-32fe-46d0-9fc8-6b8986621f3c}",
+                          "install-url": "https://addons.mozilla.org/firefox/downloads/file/4309046/search_by_image-7.1.0.xpi",
+                          "name": "onboarding_add_on_search_by_image_name",
+                          "description": "onboarding_add_on_search_by_image_description",
+                          "icon-res": "ic_add_on_search_by_image",
+                          "average-rating": "4.61",
+                          "review-count": "1,563"
+                        }
+                      ]
+                    }
+                  }
+                }
+              }
             }
-          }
+          ]
         }
       ],
-      "targeting": "((is_already_enrolled) || ((isFirstRun == 'true') && (app_version|versionCompare('113.!') >= 0)))",
-      "startDate": "2023-05-01",
-      "enrollmentEndDate": "2023-05-08",
+      "targeting": "((is_already_enrolled) || ((isFirstRun == 'true') && (app_version|versionCompare('134.!') >= 0) && (enrollments_map['long-term-holdback-2025-h1-growth-android'] == 'delivery')))",
+      "startDate": "2024-12-12",
+      "enrollmentEndDate": "2025-01-16",
       "endDate": null,
-      "proposedDuration": 35,
-      "proposedEnrollment": 7,
+      "proposedDuration": 28,
+      "proposedEnrollment": 14,
       "referenceBranch": "control",
-      "featureValidationOptOut": false
+      "featureValidationOptOut": false,
+      "localizations": null,
+      "locales": null,
+      "publishedDate": "2024-12-12T20:37:45.763407Z",
+      "isFirefoxLabsOptIn": false,
+      "firefoxLabsTitle": null,
+      "firefoxLabsDescription": null,
+      "firefoxLabsDescriptionLinks": null,
+      "firefoxLabsGroup": null,
+      "requiresRestart": false
     }
   ]
 }