About three hours ago, Hortus announced that the patch 2.4 PTR would be going down for four to six hours to apply a new build. So they ought to be down for another one to three hours. In the mean time, we all get a break from beta-testing the patch to get some food, watch a movie, do some homework or -- let's be honest -- gripe about the patch.
What will this new build contain? Well, since they haven't updated the PTR patch notes yet, we can't be certain, but it would be reasonable to guess they'd be fixing two outstanding bugs: huge stats and huge NPCs. Other than that, we'll have to wait and see what Blizz brings us.