I just have Raspberry Pi 3 board. So...
ISO url:
Insider preview
Ver.16193/Ver.16226
Must have MSA logon to Insider Preview program and request download link from here:
http://go.microsoft.com/fwlink/?LinkId=733603
Ver.15063
Windows 10 IoT Core for Raspberry Pi 2 & 3
https://go.microsoft.com/fwlink/?LinkId=846058
Windows 10 IoT Core for Dragonboard 410c
https://go.microsoft.com/fwlink/?LinkId=846059
Windows 10 IoT Core for MinnowBoard MAX
https://go.microsoft.com/fwlink/?linkid=846057
Download Windows 10 IoT Core Dashboard http://go.microsoft.com/fwlink/?LinkID=708576