Lionsgate/Summit literally just started filming the Divergent movie with Shailene Woodley, and they already know that they will be making a sequel. This was a bit obvious given the stock has exploded over the past few months as analysts grew bullish at the prospects of the YA novel hitting the big screen. The reason this is in the news today is that Deadline is reporting that Jane Got a Gun writer Brian Duffield has been tapped to script Insurgent which is the next installment. That particular film may be familiar to a whole lot of people who follow the trades. It is a Western being produced by Natalie Portman that has been marred several casting changes since production first got off the ground. In other words, Duffield knows how to write for female characters.
No release has been set just yet for Insurgent, but assuming a Twilight/Hunger Games-like schedule, one could imagine March 2015–one year after Divergent first hits theaters.