With them finding data about possible 4 new allied races, including skeleton and forest trolls, I'm honestly more excited at the possibility of vrykul and tuskarr, 2 races people have been asking to play as since wrath days.
And as for the other possibility of playing as the new shadow lands races, no, just no, that makes no sense as they are neither mortal races or have any affiliations to one faction, and are just stewards of the realm of death