On Tuesday http://www.joomla.org published the new release of the OpenSource Content Management System. Joomla 1.7.0 is out and it has been nearly just half a year since the last major release. The 1.7 iteration features a new update mechanism that allows to one-click-update a site onto the last stable release.
What is also important, despite other new features and changes of course, is that the developers finally closed a weak spot in the 1.6.5 (and earlier) release which allowed to compromise the site via cross-site scripting.
You can download the new release here.