That kit is listed on Adafruit, https://www.adafruit.com/product/2733 I already have most of what's in it. To be honest I haven't been all that impressed with Windows 10 IoT so far. I'll have to have a read to see if they've added anything since the last time I tried it.

EDIT. lol, should have read it before posting. Adafruit is mentioned with the link I posted.