Do you have any links to anyone clearly disputing it? Because I haven't seen any. The closest I've seen is a guy saying, effectively, "Of course we wouldn't do that! Unless it's a used game. We don't want to talk about that case yet."
https://twitter.com/XboxSupport3/status/336924786410278912
https://twitter.com/MrJonty/status/336924553848684544
Newer, Major Nelson has come and said that there is "no confirmation" on anything other than the ability to trade and resell games.