Eh, like it needed a confirmation lol. This is the last stop before the holidays other than TGS, which is far too late to be probable. The fact they cut pre-orders a week before was all-telling, since they want to know exactly how many orders are set in stone and make sure they're good to greenlight the release date while meeting demand. While the rumored release date is still iffy, it would be exactly two months after the presser as well which gives them time to get the hype machine rolling. If they started production this month, they'll have 2-3 million consoles at launch and those will sell out.
What's funny is XBone will be more scarce this holiday season because I have a feeling M$ is behind on production due to all the scrambling they've been doing to add last minute changes. If you want to finance your PS4 this year, an easy way to do it is resale of an X1 lol.