Looks like WordPress 2.8 will be on schedule to be released on June 10th. Release Candidate 1 (RC1) of WordPress 2.8 is now available for downloads. According to the Official WordPress blog this may be the final RC released before WordPress 2.8 is released.
With Release Candidate 1, we think WordPress 2.8 is ready and complete.
If you are interested in testing out the release candidate or just want to try out WordPress 2.8 before it is finally released, you can download it from here, you can view the complete changelog to see the changes made since Beta 2, don’t forget to take a look at the new features in WordPress 2.8.