Tonight, I ran through Drak'Tharon Keep in Zul'Drak on druid Calnar.
An interesting instance, I also discovered druid's new skills added in the expansion.

Now, all weapons have a weapon attack rating for druid, even for weapons such as a sword, which druid cannot use.

One of the bosses in Drak'Tharon Keep, looks similar to the boss in Scholomance.

Druid's in cat form can use swipe to attack multiple targets, a nice AOE ability.

Druid's in cat form can do feral charge also, and cat automatically is behind the target after the charge.
Seems druid is a capable dps class in the expansion.