After the release of joomla 2.5 the release of joomla 3.0 has been announced. There are many features in this new release for which it been considered as a major release. Important features raises cms platform to reach to next higher level which makes it significant.
To download the latest stable version click here and your process will be done in no time.
As you may have being using the older version but in coming time the older version of 1.5 will not be of any use. While using this new version of joomla 3.0 remember getting it updated every six months till the release of 3.5 which would a compatible and ease process. Former upgrading the version consult the development team for the features incorporated in it as its very important. You can also upgrade the version from 2.5 to 3.0 until and unless you are aware of the consequences and its benefit.Production of newer sites are to be done on this new release. Existing sites on 2.5 need not necessarily get upgradation.
You can be assured of the security of the joomla due to their eminent security teams which keep a track of all the errors with its frequent reports and security check thus making it secure. Fixing the tracker issues from older version has also been done including its incorporation of new feature. To make joomla more developed only requirement to be known are the reports of bug which can be checked and corrected on regular bases.
Joomla 3.0.2 is a security release to know more about the release click here
Learn more about Joomla! development at the Developer Site