This isn't a full season pick-up (seems that they like to do things piecemeal), but it's pretty close - the total number of episodes ordered now stands at 18.
Furthermore, the network is going to give the show two Monday night trials on December 1st and 8th, airing after Gossip Girl (One Tree Hill will already be in repeats). The show will also air in its normal Tuesday slot on these nights.
Are you watching this show yet? I think you'll be pleasantly surprised...
Source: TV Guide