Patch 2.4.3 is live on the Test Realms today. It's got several very interesting changes in it. Chief among them:

-Mounts at 30?! Yes, it's true: Apprentice Riding and mounts are now available at level 30. Training costs 35 gold.

-When a stun wears off, the creature that was stunned will prefer the last target with the highest threat, versus the current target.

-The Eredar Twins will now award the same items regardless of which order they are killed in.

-The new stopwatch feature can be accessed via the /stopwatch, /sw, or /timer slash commands. Inputting a time into the slash command will make the stopwatch count down. For example, /stopwatch 1:0:0 will make the stopwatch count down from an hour, /stopwatch 1:30 will make it count down from 1 minute, 30 seconds, and /stopwatch 30 will make it count down from 30 seconds.

Head on over to Pesmerga's Thread to check out the discussion on it.