Release Notes: Addition of b2mail.php to allow emailing entries, and fixes for many potential security bugs.
Release Notes: An XMLRPC interface which is compatible with clients that use the Blogger API was added. Other new features include ping to weblogs.com, an RSS feed, XHTML compliance fixes, in-context preview (preview your post as it would really appear in your template), file/image upload, more template tags, a bookmarklet for MacOS IE, sidebar posting for Windows IE/Netscape 6, and a Blogger importer.
Release Notes: Fixes for some ugly bugs, and optimized functions to decrease page generation time.
Release Notes: An updated UI, code restructuring to be even easier to maintain and extend, some optimized template-tags with optional parameters for more customization, and a lot of bugfixes in the post/edit/comment parts.