The Joomla Project is pleased to announce the immediate availability of Joomla 2.5.1. This is a security release. This is also the first release made within the new six-month release cycle that started with the delivery of Joomla 1.6 in January 2011.
The Production Leadership Team's goal is to continue to provide regular, frequent updates to the Joomla community. Learn more about Joomla! developement at the Developer Site.
Version 1.6.5 will reach end of life one month from today, on 19 August 2011. All users of version 1.7 should update to version 2.5.0 before that time. The update process is very simple, and complete instructions are available here.