The Joomla! Project has announced the release of the 6th beta of Joomla 1.6. A total of 98 issues have been addressed since the previous beta was released which hopefully brings 1.6 that much closer to a release candidate.
The latest version can be downloaded here.
A timeline of the 1.6 release can be found here: http://community.joomla.org/blogs/leadership/1168-joomla-16-development-shifting-gears.html