Star Wars: Episode III: According to The Official Star Wars Website, even more characters which played a role in Attack Of The Clones will be integrated into the Episode III storyline:

The cast of Episode III continues to grow, and two returning characters from Attack of the Clones will reprise their roles for the final installment of the saga.

Though Trisha Noble's performance as Jobal Naberrie was cut from the theatrical release of Episode II, her scene as Padm

Brian B.