WordPress 2.5 has just been released. While there are a number of nice improvements (see my previous blog entry), there are still a number of notable issues with plugin compatibility that are not resolved. In particular, the WPG2 plugin (for integration of Gallery2 photo gallery with WordPress) is quite broken with WordPress 2.5. Do check out the Plugin Compatibility page at Codex. If you are planning to give WordPress 2.5 a try, do remember to backup your files and database!