The Public Test Realm (PTR) is up and running and now we can roll up our sleeves to see what all the fuss is about. Before you go (or while you're waiting for the very large patch to download) read up on the current changes being tested:

"Ardent Defender: Redesigned. Currently, any damage taken by the paladin while at 35% health or below is reduced. Instead, any attack that would reduce the paladin to 35% health or below has its damage reduced. In addition, once every 2 minutes an attack that would have killed the paladin will fail to kill, and instead set the paladin's health to 10/20/30% of maximum."

Let's see...Guardian Spirit-like with some Will of the Necropolis (a la Death Knight) thrown in and we've got ourselves a pretty good death avoidance ability. This could be a game changer. Watch this one for modifications as it gets tested.

Check out the rest of the analysis of the Paladin PTR Changes.