I'm not really stressing over it until Monday, but I thought I'd see how others are doing. STO's pre-order FAQ indicated the 8th, Amazon has indicated anywhere from the 8th to the 26th(?!). Most common answer from Amazon on the subject is that the codes will be emailed by the 11th.
There's been a few links passed around for downloading a STO client ... no guarantees they're the same as the OB client. Many agree that if it's a CB client, it'll be patched to OB client when you are able to access the game. In any event, I have a client installed that supposedly was built Dec 29th 2009. Whether it'll work or not, no idea.