Well, it’s been over a month since WordPress 3.0 was released, so it’s not surprising to see a maintenance release being made available. This one fixes a pile of
major minor issues, but as far as I know, there are no immediate screaming security holes that demand an urgent update.
Full details with links to downloads and all the gory developer details are available on the development blog.
The automatic update from 3.0 worked for me without any need to kick anything. Good stuff.