Joomla has release the security release of the platform which is version 2.5. A year ago they came out with 1.6 and have since updated to 1.7.4 just before coming out with the latest, stable version of 2.5
2.5 is part of a new version delivery process that will take place every 6 months. Starting with 1.6, Joomla versions have been released every 6 months, which means in one year, Joomla 3.5 will be the next security version released.
Version 2.5.0 is also a LTS (Long-term-support) release. This means it will be supported for at least 18 months after it's release.
Learn more about the Joomla 2.5 release on their website at Joomla.org
Included in this release are a series of new features. The upgrading process has been built within the Joomla administrator which means it is much easier to upgrade.
It's now easier to find what you are looking for with Joomla's core search plugin. Part of the search is auto-complete and stemming. Learn more about it in our features list.