As Fox says in their press release - Fringe has been renewed "in both Universes." They are calling for a full 22 episodes.
The show is getting great, so people really need to start watching. And I think they do a really good job of recapping what you need to know at the beginning of each episode so you can jump in and not be totally Lost.
If you want to learn more about the shows over-arching storyline, the older episodes are on DVD, as well as streaming from Amazon. If you just want t catch up on recent epsisodes Hulu.com has the previous 5 episodes streaming for free.
