I'm really curious what kind of time jump, if any, we'll get between Revenge of the Sith and Rebels. Since Filoni seems to be ecstatic over using more Ep IV based designs, I'm guessing we'll get about a 10 year jump. The Empire will have a chokehold (no pun intended) on the galaxy and the Rebels just starting to be pains in their collective asses. A 10 year jump would also makes things interesting if they bring back Ahsoka, which I'm sure they'll do. An Ahsoka vs Vader duel has to be in the cards down the road for this series.
Hmm, come to think of it, I almost wish the planned new movies were focusing on THIS period instead of the post-Jedi period. Getting more live-action stuff with Vader and the early days of the Rebellion would have been awesome.