Well, as of today we have our answer. Hi-Rez studios officially announced that the game will launch on February 1st, 2010, and pre-orders are available through Steam, Amazon.com, and the official site beginning today. Those who pre-order will enjoy all sorts of perks, including access to the January beta events, ability to reserve their player and agency names, and special in-game items. Even better, there is a special limited edition box available for order that will include the pre-order bonuses plus an art book and poster.
In the meantime, there is more beta testing to get through, so if you are interested but haven't signed up yet, what are you waiting for?