1. Major improvements to the responsive styling.
2. Toggleable sidebar
3. Upgraded to modernizr 2.0 which includes Respond.js
4. IE7-9 testing and fixes
5. New theming system which should make forkers happy
6. New rake task for installing Octopress themes
7. Magic
highlighting tests, improved syntax highlighting and styling of pre
blocks.
Overriding dynamic gist styling.
Added a plugin for pygments caching which should speed things up
terrifically.
added ender.js as a lightweight way of scripting the DOM, events, etc.
Some general typography and semantic html improvements.
Brandon Mathis