Hasbro has issued two press releases in regards to Transformers and the new The Hub network that will be launched October 10th, 2010. The first press release (PDF) covers the details on who will be doing voices for their various cartoon including Transformers: Prime.
Peter Cullen (needs no introduction) - Optimus Prime
Frank Welker (needs no introduction) - Megatron
Gina Torres (Firefly) - no character name provided
James Remar (Dexter) - no character name provided
Josh Keaton (lots of video game work) - no character name provided
Kevin Michael Richardson (lots of cartoon work) - no character name provided
Markie Post (Night Court) - no character name provided
The second press release (PDF) confirmed that The Hub would re-air the original "Generation 1" cartoon series that started it all. Other additions include G.I. Joe: A real American Hero, Doogie Howser, M.D., and The Wonder Years (sweet, loved this show growing up). No details on air times were provided for the shows. Thanks to Rodsuper for the links.