Typo is a ultra modern weblog engine written in rails.

New in this release:
* Static Caching, your typo blog will now serve thousands of pages per second with ease. All the active elements of the frontend were moved into JavaScript
* First official release with the new Azure theme
* Multiple theme support, please create your own!
* Newly designed admin interface
* Textile, Markdown and Smartypants support, all bundled
* Enhanced spam protection
* Quick post functionality
* Support for multiple users posting to the same blog
* Powerful sidebar management with drag and drop goodness
* Monthly archives
* Multiple syndication support built in for 43things, del.icio.us, Flickr, upcoming.org, tadalist, technorati, 43places and much more.
* Ajax'ed out the wazoo
* Edit/nuke comments while reading them in the frontend ( as admin )
* Converters for most major blog software including import from RSS feeds.

... and tons more new features and improvements. The svn repository number doubled since the last release.

Here are some images of the new admin interface