I haven't read the comics, but to me it's likely Governor is going to form an army of people/walkers in order to attack the prison and get revenge later in this season or the next.
I skimmed some of the summaries for the comics, but honestly, the television series doesn't adhere to the comics that well in the first place, so the comics don't exactly foreshadow what will happen in this season imo. Although I think it's obvious that the Governor will attack the prison again with a new gang of people. He'll probably appeal to the desperate people that are living in the wilderness and who want a safe place to live and the prison is one of the few safe places in the area apparently. That'll probably be their target.