Heroes 6 - Discussion

and Nag

It might not be them either; this is, of course, the most anticipated option of all, but nevertheless, it hasn't been confirmed. Moreover, it could also be the Faceless Ones, although I don't know in what form they will appear if the developers promised to avoid "Underground City."

Just elves, please.

Essentially, there are two main contenders:
1) Mages
2) Elves

And I think the latter has a slightly better chance.