Next Wednesday, June 10th, is the target date for the release of
WordPress 2.8. Tickets against the 2.8 milestone that are not
blockers will be postponed to another release.
WP 2.9 will require MySQL 4.1.2 or greater. This is raised from the current requirement of 4.0.
Checks will be added to the automatic upgrader that will prevent upgrading to [...]
More: continued here
