Radiant 0.6.6 was released over the weekend, shortly after the release of Radiant 0.6.5. Obviously, 0.6.6 of this built with Ruby on Rails CMS was released to fix some bugs in 0.6.5. So instead of focusing on the bugs, let's focus on what is new in 0.6.5/6 since Radiant 0.6.4 was released in November 2006.
Since Radiant 0.6.4, the latest versions of the software introduced two major changes: