Daily Variety has a story today that "Terminator: The Sarah Connor Chronicles" has been picked up for a second season, 13 new episodes. That doesn't seem like a lot, so it looks like they're still being tentative, only picking up a certain number of episodes first rather than a full season up front. A new show's first season is usually shorter, but subsequent seasons are usually the normal length. Or maybe things are changing/have changed. I seem to recall hearing that shows on HBO and other cable channels no longer have the traditional 20 to 24 episodes per season.
The pickup isn't regarded as a surprise since the show did fairly well during its first season run. There's some talk about there being in the works "potential companion series" to the show, but I can't even begin to unravel what that might mean. I guess we'll see if they actually materialize.
And on a related new-show note, when NBC unveiled their new fall schedule recently, they did have "Knight Rider" included on it, so it looks like that show has been formally picked up based on the recent television movie. I haven't read how many episodes they might have ordered though.