Quote Originally Posted by Theodric View Post
That was stated before the game was confirmed to be set for additional expansions. Yoshi-P has since spoken up to state that it is no longer an impossibility.
They said - recently - that they didn't think they could add new races beyond the original Viera/Hrothgar. They've been pushed to effectively add one more race beyond that by adding the alternate genders.

Admittedly that doesn't necessarily rule out new races using the exact same body models as existing ones, but they certainly haven't only said "no more races" before changing it because they were planning additional expansions.

If anything, I suspect they were holding their "one last manageable race" in reserve for a future expansion but have since concluded they have no choice but to use it for completing Viera and Hrothgar ASAP.