I'm excited as fuck for this. I've watched all three seasons and I'm ready to see more of Rick's gang. Especially that badass Daryl Dixon.
In season one, the show lets the audience get used to the whole zombie-apocalypse thing, in season two, we get to know more about the zombies, and in the third, we find out that living humans can be as dangerous, or even more dangerous than the walkers. Since that annoying asshole governor was left alive, I'm guessing they'll have to deal with him again and he's gone full blown insane after all the shit that happened. It also seems as though the group will have a conflict in their decision to leave the prison or not. Some will want to leave, some won't. I'm hoping this is gonna be awesome.
The trailer AMC released is only available in USA, so for those of you outside it, some other guy put up the trailer for everyone
HERE.