I don't think the Governor's gonna attack the prison for any time soon. I have a feeling the fourth season is gonna start with him driving into Woodbury only to find no one's there. He's probably gonna walk off emotionless, leaving us wondering where the hell he's gonna go. We won't see him until probably the mid season finale where he comes back with his long ass hair, huge beard, and decked out outfit like in the comics. That's not until the fourth season so we can discuss that when it comes.
A lot of complaints for the season finale but I thought it was fantastic. It was pretty obvious Andrea was gonna die with her taking years to cut herself open. At least she went out with a bang. Carl killed it this episode also, that verbal smackdown on Rick which was the truth honestly. No risks, you either kill first or face the consequences later. Tyreese joining the group is gonna be a pleasure next season. I wonder if he's gonna become Rick's right hand man as Daryl's there, either way I'm glad he's there.