The Boondocks will be returning to television for a third season on Adult Swim after a two year hiatus. It was announced by creator Aaron McGruder on his MySpace page.
Nothing official has been announced by Adult Swim yet, so this can only be taken with a grain of salt. On the other hand, the creator of the show could be considered a fairly reliable source. McGruder did mention on Twitter that an airdate was determined but wasn't allowed to say exactly when it was.
If you've never watched The Boondocks, I urge you to try and catch it online. It's funny, but not in an in-your-face sight-gag sort of way. The humor is more intelligent and subtle than anything on Fox's Sunday night lineup. The show is an example of personality-driven humor (in this case of the African-American variety) meeting the anime style of cartoon and is the best example that I know of the merging of East and West animation.