WordPress 2.2.1 is now available. 2.2.1 is a bug fix release for the 2.2 series. Since 2.2 was released a month ago, the WordPress community has been improving fit-and-finish by identifying and fixing those little bugs that can be so annoying and by fine-tuning some small details. The result is a nicely polished 2.2.1 release. The full list of bugs fixed in 2.2.1 is available here. Here are some highlights.
Unfortunately, 2.2.1 is not just a bug fix release. Some security issues came to light during 2.2.1 development, making 2.2.1 a required upgrade. 2.2.1 addresses the following vulnerabilities:
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.