Major Nelson has posted a blog which gave some details of what to expect from Xbox at Gamescom this year and said there would be “all-new Xbox hardware and accessories.”
As you might expect the internet went in to overdrive and frantic writers and Youtubers got to work on their OMG NEXT XBOX AT GAMESCOM posts.
Honestly, would Microsoft reveal the next Xbox at Gamescom? No, of course not. Major Nelson has since updated his post “clarify the hardware news” and it now explains you should tune for news of “new Xbox One bundles and accessories.”
The all-new hardware is probably a new controller, the Xbox Elite 2, details of which have been leaking out.
Source: Major Nelson (but mostly common sense)