EDIT: Be sure to read our review of the Kaby Lake i3 NUC as well.
Amazon seems to have the Kaby Lake Core i3 NUCs in stock.
There’s the NUC7i3BNH with a 2.5″ SATA slot sold for $315.95 and the more sleek NUC7i3BNK sold for $315.69. They sure got the photos wrong for both though! That’s the Skull Canyon NUC6i7KYK in the photos.
In reality they’ll have a more conventional look, see below for the NUC7i3BNH.
If you’re wondering, you can find the specifications of the Kaby Lake NUCs here.