I think the news appeared in an article first. According to it, Microsoft took the unprecedented decision to upgrade the specs of the Xbox One before its release.
This is the actual article from July 12th or so, and it mentions the survey sent out to developers, a rumoured upclock -which turned out to be real-, how they took the decision due to the DRM issues and an alleged upgrade to 12GB because development kits shipped with 12GBs then --although developers thought retail kits would have 8GB.
http://www.extremetech.com/gaming/1...-the-specs-of-the-xbox-one-before-its-release
Its been floating around these forums since atleat Febuary.. Guilty as charged im afraid.. http://forum.beyond3d.com/showpost.php?p=1714023&postcount=2955