All New X-Men is Bendis' baby. One of the core elements of Marvel Now. It won't have rotating creative teams or anything like that. It'll be more like Hickman when he launched FF, and be a companion book to the relaunched Uncanny X-Men.
The entire purpose of All New is to feature the Original X-Men. I don't see any reason for it to continue once this story line is completed...unless they just want to keep the book around and do what they did with Astonishing (which is irrelevant now IMO).
I believe Bendis has said AXM is a redemption story for Cyclops. The younger X-Men are just a means towards that.