As you might have guessed from the title, the game is based on the Star Wars: The Clone Wars animated series, which currently airs on Cartoon Network. The game will take from both seasons of the show and will include additional battle modes, the ability to command squads, and additional attacks and moves.
The game is in development for the Wii, DS, PSP, Xbox 360, PS3, and PC. It's scheduled to be released in the fall of 2010.