WordPress 2.2.1 is now available. 2.2.1 is a bug fix release for the 2.2 series. Here are some highlights.

• Atom feed validation fixes
• XML-RPC fixes
• Widget backward compatibility fixes
• Widget layout fixes for IE7
• Page and Text Widget improvements

Special thanks to Alexander Concha for his continued assistance in making WordPress more secure

Special thanks also to Daniel Jalkut of Red Sweater Software for his improvements to our XML-RPC implementation.

P/S : You must upgrade to this version. It’s all about security on your blog. How to upgrade? Upgrade in Five Steps