Ok I have some season 5 spoilers I just gleaned from the latest issue of SW Insiders so stop reading if you want to be surprised:
1. We are going to visit a planet called Onderon that will look a lot like Ancient Rome with Jungles.
2. We are going to see the rise of criminal groups including the debut of the Black Sun (yeah SOTE!)
3. We are going to see a major adventure for R2 where he gives his "biggest contribution to the war effort to date."
4. We see Embo in Action again, but this time with his faithful sidekick Marrock and the pair resemble Snakey Eyes and Timber!
5. "Some of the characters we have created for the show will meet their destinees." I am assuming that means more folks die. Please let it not be Wolffe.