It's been a while....
General: All forms of Quickness were reduced from +100% Attack Speed down to +50% Attack Speed. For PvP / WvW, all damage done by Confusion and Retaliation now does only 50% of their PvE damage output.
Class: Turrets got some offensive buffs, but didn’t get helped much in the survivability side of things. The universally used trait of Kit Refinement got completely changed to the point of being essentially worthless for almost any build. Beyond that, there have been some minor buffs and nerfs which have been listed in the patch notes. Some of the Tool Belt skills were seriously affected for the weapon kit abilities, so take a good look at them.
For the most part, people are still using HGH elixer builds using the Grenade kit as the ultimate dps spec.