The official notes for test version 3.11 have been posted:

*Note: We hope to have this build out sometime on February 17, 2006, pending completion of internal testing.

* Major revision of the User Interface (UI), including a new logo and revision to the fonts, status bar, radar, soldier management toolbar, tooltips, and first time help dialog.
* Many changes to the default keymap and UI placement.
* New timed helper that assists new players by popping up context-specific help as they move around in the game.
* Added the BR24+ hats and berets. Characters of all three empires gain the option to wear a hat or beret when they reach Battle Rank 24. The /hat command is used to put the hats on and take them off (the /helmet command must first be used to hide the helmet).
* Added the "Appearance" dialog, accessible by clicking the "Customize Appearance" button on the Character pane. This dialog allows players to quickly choose which optional items they want their character to display.

Check out the full notes in our patch notes section here.

Also note that the VS hat issue from yesterday turned out to be a joke:

If you've read this far the above mentioned hat implementation is a joke. The actual new implementation is that each empire will have a choice of wearing a Beret or Cap of appropriate color that displays their empire logo by default. If you are in an outfit your outfit logo will display instead! These can be toggled with the /hat command to display either the Beret, the Cap, or no hat. You must be BR24 or BR 25 to have this option.

So empire or outfit logos on the new hats - great move!

Update: We have taken a few quick screens of the new UI as well as several screens of the new hats:

   

All the hats not listed above are as follows, NC Cap, TR Beret, and VS Cap. Head on over to the comments thread to discuss this post!