This is the new *stable* release, following 0.8.2.2. It is also known as the "Thunder" release! 
You can get it from the downloads section.
The feature set is the same as for previous development versions with a few minor fixes. However, here is a summary of changes since last stable release (0.8.2.2):
- Security has been improved.
- This version has been fully internationalized and several localizations are already included.
- The login/registering system has been rewritten.
- The public interface can now restrict access to protected/private posts based on user login.
- The bookmarklet and sidebar features have been upgraded to full support of evo features. The regular backoffice as well as the Blogger API have also been improved.
- Comment spam prevention (vig-rx syndrome) has been added through the use of a blacklist. This also applies to referrer spam.
- The codebase has undergone heavy refactoring and gained flexibility. The directory structure is now fully configurable.
- Find out more, from the online demo!