Out of the 3 blogs that I manage, 1of the 3 showed a note atop the admin section that WordPress had an update available. The other 2 didn’t show anything, however, they did all have a note in the WordPress Development Blog section of the dashboard that the download was available but hadn’t been made public yet.
Version 2.5.1 of WordPress is now available. It includes a number of bug fixes, performance enhancements, and one very important security fix. We recommend everyone update immediately, particularly if your blog has open registration. The vulnerability is not public but it will be shortly. In addition to the security fix, 2.5.1 contains many bug fixes.
Get your copy now! Click here to download WordPress 2.5.1