Source, proof of assertion?

As far as I know he's right. The news was given first to Amazon and Microsoft sometime in August. Consider one month for testing and preparing for release, that gives three months to build a solution for all supported operating systems. Two months to do it for the most recent version and one month for backporting to the older ones sounds about right. Maybe a few weeks more, but that's it.

Intel's own press releases. I'm not gonna go digging into old links just because some random dude on the Internet can't use Google.