Board Thread:Star Wars/@comment-4935956-20140619235414/@comment-4935956-20140727232704

Luminara Unduli is going to be in Rebels (since the comic she dies in is now "Legends"). She's [spoiler alert] imprisoned on Stygeon Prime by the Empire, on the same world in the same prison that Sidious and Dooku imprison Maul in in the Son of Dathomir comic series. Originally, in Son of Dathomir, it was just called Stygeon, but in Rebels they decided to say its full name is Stygeon Prime and that Stygeon is just a short way of saying it.

Also from the trailer, it appears C-3P0 and R2-D2 will be in Rebels.