Patch 1.1.4 is currently on the Public Test Server. There are numerous bug fixes, but a couple specific additions excite me greatly.
Firstly, we will be able to adjust how our cooldowns look. For a more in-depth look you can head over to the official SWTOR blog or to Ayane at Moon Over Endor. Specifically, I am looking forward to the "Show Cooldown Text" option, which will have the actual cooldown time remaining for cooldown listed on the hotbar icon. With the UI enhancements to be added in the not-too-distant future with Patch 1.2, this should bring the UI up to a standard of quality that the average MMO player is more familiar with.
Most importantly, however, is that the warzone intentional team stacking bug is fixed. Anyone who has done some PvP has probably seen a match where one team had more than 8 players. Some clever players discovered how to do this reliably. This caused matches which were unbalanced and, quite honestly, not any fun. The patch notes seem to indicate that this may happen still, but it won't be because of player intervention if it does.
You can find the full patch notes for 1.1.4 on the Public Test Server forums.