Joomla 3.1.0 Stable has been released.
Most notable in this build among new features is the long awaited Tags feature as descibed by Nick Savov's community post Tag you're it
There is also the important inclusion of 7 low and medium priority security patches for information disclosure, XSS, DOS and privilege escalation vulnerabilities affecting versions 3.0.3 and earlier versions of 3.0. In addition 38 items from the bug tracker were also addressed.
Full details can be found in the official 3.1.0 release announcement at joomla.org
Since this release improves security, we recommend that all users perform an Joomla upgrade immediately. If you are unable to perform the recommended update to Joomla 3.1 the project has also made Joomla 3.0.4 available for manual installation, it is exactly the same as Joomla 3.0.3, except for the 7 security fixes.
Users of sh404SEF® should install the latest version of sh404SEF® before upgrading to Joomla 3.1, see the sh404SEF® 4.1 release announcement for details.
A Joomla upgrade can be performed directly in the Joomla administrative backend. For users with multiple sites, we recommend updating all your sites from Watchful.li — a centralized site manager for Joomla.