In a question and answer session with The Intergalatic Highway, voice actor David Kaye announced that he was turned down for several roles in the upcoming "Transformers: Prime" CGI series that will air on the Hasbro / Discovery channel called The Hub later this year (within the US).
Q: Has there ever been a role you didn’t get that you were really disappointed about?
A: Ya funny enough. ANYTHING in the new Transformer series. But hey I’ve had a great long run and it’s a new deal for the creators of the new show and it’s a clean slate but I have to admit I was sad to see it go. That’s show business folks There’ve been a couple of animated features too, also Star Wars and even the new Transformer films.