March 2013 update
The March update focused on revision of blue, covering 614 headwords, compounds, and other expressions.
New words and meanings include boccia, podium, and whip-smart. Alongside these, we have major clusters around the ranges of: audience and audio-; Caribbean; credit and Creole; friend; gang and gangster; serial and serious, smart, and the volcano words.
You can read more about the revisions and new words in the March 2013 update in this article by the Chief Editor of the OED, John Simpson.
See a full list of the new words and new subentries added in this update.