No more desktop ATX or uATX from intel for sure, but some sites are reading too hard into it IMO. Dumping retail boards isn't the same as getting out of the motherboard channel.
I suspect ITX (at the very least least their own created standard thin-itx) will have new products for awhile, and should be seeing a lot more NUC like stuff of course. (you can buy bulk pack NUC board-only already)
Some of it is likely to be OEM only, though it doesn't mean the DIY won't be able to get their hands on it anyways.
There will still be plenty of ATX (and larger) server boards and barebone chassis systems though, its a separate group.
When I stopped caring about super quiet: E5 1680v2 @ 4.5Ghz, 980ti, i750 SSD - JS9500 & Dell P2715Q for dual 4k@60 because reasons
SAN shares over 56Gb infiniband, microcenter + fleabay = severe risks to my wallet