The guys who were really pushing Bespin forward went to Palm several months ago. The project looks great, but it may not have the same velocity right now.
Ben and Dion left in September, just before we kicked off the "Bespin Reboot" project, which we had been planning since mid-summer. I believe we'll soon have much better velocity than we did previously, thanks to our work in the Reboot. (Reboot is not a rewrite, but a very significant rearrangement of the code.)