I listen to wdwtoday and they haven't mentioned anything, and a lot of the big players in the Disney fan community seem to still be planning there own big events so I would have my doubts that they are going to hold it in 2010.
I heard Matt refer to the Adults and Solo Travelers section of the DIS boards. They've mentioned the DIS other times, too. I remember them telling people how the DIS has a forum for renting DVC points from members.
I split my time in December at DIS A Palooza and the WDW Today Reunion. The part I liked best was seeing the overlap of people who also attended both. I saw quite a few DISers at the Reunion and vice versa.