Currently in development for FOX TV is a pilot/possible TV series called The Sarah Connor Chronicles, which follows the events after the Terminator 2: Judgement Day movie. Lena Headey (300) has been cast as Sarah, while Thomas Dekker (Heroes) is playing the teenage John Connor. The series is produced by Mario Kassar and Andrew G. Vajna, who were producers of the Terminator films.
This should be interesting--according to the producers, they're also making a 4th Terminator movie, and this series will somehow connect to that movie, as well as provide links to the 3rd movie, Terminator 3: Rise Of The Machines.