This release is significantly faster and contains almost 800 significant code changes. You can now subscribe to a user's content and have it delivered via the notification method of your choice. There's an integrated Twitter-style microblogging service. You can embed rich media into your content. There's a new design, and there are many other changes.
This release has been completely rewritten. It is very flexible and extensible, has excellent programming APIs, and runs well as a stand-alone network out of the box.
New profiles were added, including widgets.
Groundwork was done for OpenID client and server
(available separately as plugins). The
architecture and APIs were revamped. Miscellaneous
bugs were fixed.
This version includes many new features, including photo galleries, open APIs, enhanced internationalization, a community browser, new theme structure, simpler navigation, improvements to the WYSIWYG editor, OPML output, and more.