I saw the advancements, but that's all. And they only have placeholder icons. I've also talked about UAT stuff on the official Discord server, when devs and moderators were present. So yeah, I'm pretty sure the NDA is gone now.
On a related note... Dire Avengers and Howling Banshees are still missing arm armour. Warlocks still have an untextured sash.
Nah it was just after CC the first time but I didn't get downed and I had no life steal I don't think. The second time I just fired a couple of shots at someone and they ran off with half health but game seemed to think I had killed them and gave me the EXP.