CBS has Released the Details of the Final Episode: 
A new lead in a cold case requires Lisbon to delay her plans to leave for Washington, D.C., giving Jane time to finally come to terms with his feelings for her and decide on a course of action.

Sadly this is going to be another Jibson episode to end the season which really pisses me off to be quite honest, but I knew the IMDB summary of the episode was too good to be true. O well at least we have seasons 1-3 to re-watch, it was a good run.

Link to Official CBS Website with Final Episode Summary: http://www.cbs.com/shows/2014-finales/news/1002389/