Fox's Gotham has been approved for a fifth and final season because once you introduce The Joker it's hard to go on from there without Batman and Gotham was always about what the city was like before Batman arrived. But the final season will focus on Bruce Wayne's transformation into the Caped Crusader. So expect Gotham season five to be Batman Begins.
While no episode count for the fifth season has been given, an earlier report stated that it would be 13 episodes which would be enough to push the show over the 100 episode mark, allowing for syndication.
Gotham's season four finale airs this week May 17 at 8pm on Fox.