I spoke to Anthony, one thing he said, was that he was miss-quoted with the 2009 2nd/3rd quarter release date, and it was always more likely 3rd/4th quarter. But there were some production delays, and he was trying some different things regarding the bases. The design of the base is finalized now, and the speaker is in production. I'm guessing, as Anthony wouldn't give me a date, that they should be available not to long after CES.
Jim, regarding the size of the speaker, the 3.5 is built in the same chassis as the 3.1 was, and the overall size will be near identical between the two, though differences in the base may make a slight difference in the overall height.