There's a beta of Adobe's Lightroom 2.0 out!!! Whoopee!
Update: Here's a pretty good feature summary/review of the new Lightroom.
Update2: The above article combined with Adobe's own warnings have convinced me not to adopt this is my primary workflow software yet. (huge bummer) The fact that metadata almost certainly won't carry over and the inability to support LR v1.x libraries is a huge pain. Plus it's not been guaranteed that libraries created in a beta of version 2 can be carried over to the shipping release. I'll just have to wait for beta 2.