Yep, WordPress v2.0.5 is out. It consists mostly of bug and security fixes as most new features are being held off for the upcoming version of WordPress, v2.1 (which I have a lot of code in BTW! :D).
So what are you waiting for? Go upgrade ASAP.
EDIT: If you’re running v2.0.4, Mark has a download of just the changed files to save you time.