This version contains several significant bug fixes, CAPTCHA for non-logged in comments, SEO enhancements, new options for templates, and a new way of handling CSS. I'll be writing up guidelines on styling the module through CSS prior to the release. I also hope to have quite a bit of additional "Help" information for the release.
There are known bugs in this release mostly relating to particular and less common settings. Click Read More to view known bugs and planned features.
(UPDATE: 4.0.7 had some bugs with Detail Template loading that have been fixed for 4.0.8)