I really was convinced they'd wait until 8/8 to release it, but Adobe released ColdFusion 8 today. There are lots of new features in ColdFusion 8—a few of which everyone has been waiting years for (image manipulation, programmatic threading, per Application settings—such as mappings!) Adobe's also worked hard to make creating AJAX applications faster and easier by providing lots of built-in tags that make use of the Yahoo! User Interface (YUI) library (as well as many other DHTML/AJAX libraries.)
If you haven't played with the betas, you should definitely download ColdFusion 8 Trial or Developer Edition and fire up your favorite virtual machine and give it a test drive. Lots and lots of new functionality to explore—and oh yeah, it's much, much faster.