I assume the group will reconnect, Daryl will explain about the radio signal they picked up in the car on their last run, and the group will head there. It will take them the second half of the season to get there. Next season will begin with them in this new location.
As a terribly logical person, here are a few things that are bugging me about this season:
-How the heck was the prison generating power?
-Where the heck are they getting gasoline? They never talk about having to ration gasoline or acquire more. They seem to use it pretty liberally to burn piles and piles of bodies, when a little bit could go a long way.