As listed in the release announcement ( http://purepistos.net.twi.bz/f ): a basic git extension; a Selector extension (isolate-as-you-type searching, using CSS or XPath); a comment toggle extension. Links to these are in the announcement.

More extensions to come. With the extension system, you can: create functions in Ruby, map them to any keys; bundle editor configuration (key config, syntax highlighting, new language defs); integrate the functionality of gems; you name it.