If you're interested in the Dolphin, you can book online now. I just booked the teacher rate for the week between Christmas 2009 and New Years 2010. I found the rates online on the SWANDOLPHIN website. (The rates were not available through the DIS Boards yet.) I did call to make the actual reservation, though, as I had an extra, non-teacher rate day to add at the end of my stay. Govn't rate is also available for the same time.