I think It's already been cancelled. However, they released the episodes "Mind Games" and "Hermanos" on iTunes today, so there's a possibility that they will will release the remaining episodes on iTunes without airing them on TV.
There's also the possibility of another hiatus.
CN most likely cancelled it, but they might release the remaining episodes through iTunes, Zune and the like.
Toonzone forums, Cartoon Network's Website, Tumblr