CBS announced it’s fall premiere dates for all its shows today. The Thursday shows will be premiering 9/26. That means that all the other networks should be following suit soon, probably this week. Last year Fox announced the premiere dates on June 18.
Chris Colfer - Vous êtes en direct (VEED)

Darren Criss Interview - Star 101.3 [Source]
4 years for glee!
There is NOTHING on the Glee Facebook that says it’s premiering August 29. Give me proof with a LINK.
I’ll also remind people that is literally the Thursday before one of the biggest travel holidays on the U.S. calendar so I really doubt that Glee is premiering August 29.

I like the sounds of this, I think. Depending on how it’s executed, of course.
What this looks like to me is that they’re wrapping up McKinley (or the main focus on McKinley) in the Fall season and then we’ll get a switch to focusing on NY, with some mini-arcs thrown in.