Well WordPress 2.0.5 has been released with several bug fixes and some security fixes. If you update you really won’t see any noticeable differences other then the plugin on the plugins page are sorted alphabetically now.
I won’t be upgrading (actually downgrading) because I have been using the 2.1 alpha for quite some time now on most of my blogs. It has been running great. I can’t wait for it’s release.