Joomla! 3.0 - New Features and Many Improvements

Joomla 3.0 was released on 27 September, 2012. This is the next major release of the Joomla CMS.

Incorporation of Twitter Bootstrap into a jui media package.
A new responsive, mobile device friendly administrator template--Isis-- and interface.
A new front end template--Protostar-- built using Twitter Bootstrap.
Updated accessible template called Beez3.
A simplified 3-step installation process.
PostgreSQL Driver. You will be able to run Joomla 3.0 sites using the PostgreSQL database.
PHP Memcached Driver
Use of JFeed for feed management rather than SimplePie
Installation of language packages directly from the extension manager
Guest user group present by default
Saving blank articles allowed
New administrator statistics module
Update TinyMCE to version 3.5.6
Continued clean up of older unused code, files and database fields and tables and improved standardization of tables.
Improvements to Smart Search
Extensive work on code style standardisation and consistency
Unit testing in the CMS
Updated system tests in the CMS
Custom active menu item for menu module
Let the SEF plug-in add the canonical url to the head
Version 12.2 of the Joomla Platform