This update mainly contained backend and infrastructure changes in preparation for Battlefield 4, and therefore not a lot of visible changes for users.

Improvements & Changes:
- New header/menu design and layout
- You can now choose to have your feed, game activity and personal info only shown to friends
- Completely new UI for the Game Manager (only available for select few people)

Fixes:
- Issue where your presence would not change when you stop playing Co-op
- Issue where the site didn't scale correct in 1280x720 resolutions
- Various compatibility issues with the Opera browser
- Various issues with Battlefield 3 multiplayer Quickmatch
- Issue where you couldn't publish your emblem to the feed

http://battlelog.battlefield.com/bf3/forum/threadview/2832654348456039456/1/