Accidentally bump into this WordPress 2.8 page on WordPress Codex. The wording seems to imply WordPress is getting ready to release 2.8 sometime in May.
On May xxth, 2009, WordPress Version 2.8,
named for xxxxxxxxxxxxxxx, will be released to the public. For more
information on this enhancement and bug-fix release, read the Development Blog and see the Changelog for 2.8.