This sounds legit. But, it isn't official until it shows-up on the OS.
Understandably, everyone is assuming that the will feature an adult Obi-wan. But, it could easily be a Yoda and teenage Obi-wan team-up film.
If I was helming this project it would center around Kenobi, Tarkin, and the ghost of Count Dooku. All three leads would be played by CG approximations of Alec Guinness, Peter Cushing, and Christopher Lee of course.

Star Wars-wise, what's next for Disney after this one? Episode X?