Apple had originally planned to release it's new digital media streaming set-top-box in June at WWDC, but pulled it from the show at last minute. A September announcement and release has been circling the internet ever since Apple decided to pull the product from WWDC this year.
BuzzFeed News said to "expect a refreshed and slimmer chassis and new innards; Apple’s A8 system on chip; a new remote that sources say has been “drastically improved” by a touch-pad input; an increase in on-board storage; and an improved operating system that will support Siri voice control. Crucially, the new Apple TV will debut alongside a long-awaited App Store and the software development kit developers need to populate it."
You can read BuzzFeed's full article by clicking here.