I would guess that both models will be available around March of 07
March? If you check out the website that is in this thread, it seems that the 2007s are already being sold in Japan. With that being the case, I'm surprised that they are not already on the market here in the USA but can't imagine them coming out any later than January. Why do you think they won't be available until spring?
I made my "SOS" folding bike years ago with the Dahon Boardwalk S1-modified with some similar improvements. Why in the world should I have waited for another white painted Boardwalk, Vitesse, or Speed with a little red cross painted on the side. Even hospital staff gave up white garb years ago.