Add support for Disqus comments (via styling).
Better clipping for the screen-reader-text in IEs.
IE bug fix: do not overflow the drop-out menus with the featured thumbnail image.
Support hierarchy styles for the pages widget too.
Hirerachical styles for nav menu widgets.
Allow child themes and plugins to override the number of featured posts on the front page + better support for Jetpack's featured content (since it lets you define the number of featured posts to show)
Fix word-wrap on pre elements.
Better calendar styling.