The title, I think, is actually a reference to Episode 6. I heard somewhere that the title was going to be "Revenge of the Jedi" before they changed it to Return.
Yeah. They realized Jedi don't do the whole revenge... thing.
The sith, however, is all for revenge.
I must say I'm really looking forward to Episode 3. The difference in quality between Ep's 1 and 2 was pretty big, in my opinion, and the arrow is pointing upwards.