The only thing im kinda concerned right now is that undeads have the "zombie" talent. Which wouldnt be good. (Source: skip to 12:16 in the video Damashi posted) I mean it could just be that Swen meant the zombie talent and not the undead race, but still.
Yeah this seems like a dangerous proposition. Hopefully they have some other really good racial passives/abilities to make up for this inconvenience. Also hopefully stuff like healing ritual can automatically ignore zombie characters. And necromancy skills can still heal.
Another thing to consider is that the undead origin is tied to shapeshifter, who will be able to polymorph to other races to probably avoid that healing malus (gaining their racial talents and stuff, losing the zombie talent temporarily), and then take advantage of poison when available as an undead, assuming it's only like a 1 AP to change race. And I think it was mentioned somewhere non-origin undead will be able to at least shapeshift into their own race.
So between these factors and hopeful changes, Zombie should be a manageable, if not a very strong racial talent. Assuming it's actually the zombie talent, and not just "healing hurts you."
The teleport change to 2 AP and 10m range is a lot, but probably just about what it needed. Maybe 12m would be okay. It'll still be very good when you have height advantage.