Veronica Mars has only been optioned for 13 episodes so far (full season is 22 eps). They are going to watch ratings closely and decide to continue the show after the ratings come in on the first few episodes of the 3rd season.
Instead of a full season arc mystery they are going to break it down - a 7 episode mystery arc and a 6 episode mystery arc. Veronica, Wallace and Logan, Dick (all going to college in Neptune) and Kendall Casablancas will be back - Duncan will not.
SO pimp, watch, write to the new CW and tell them how much you like the show.
At least it already beat out Pepper Dennis for the lineup....you'd think that was a slam dunk - but network suits are stupid.