The patch 3.3.3 PTR has a bunch of cool pre-Cataclysm content added to it that was datamined by MMO-Champion. Massive spoiler alert, so don't click on that link or follow us after the break if you want to avoid spoilers!
We covered some of the achievements and abilities being added before, but the latest update has a bunch of new information in it. Specifically, there are a whole whack of quests being added that relate to the Alliance retaking of Gnomeregan and the Horde retaking of Echo Isles! Also, both Alliance and Horde will be able to do a Twilight's Hammer cult quest line. Click through for an exhaustive list. Also to note: they traced out where the new flight paths for these events will take you. Here's the Alliance map, and here's the Horde map.
It looks like the Alliance are going to get to:
- Drop complex radiation detection equipment from a flying mount
- Learn to use Mechano-Tanks
- Retake the surface of Gnomeregan