Quote Originally Posted by Burningskull View Post
Until I see something official to me they are kin to dragons since the concept art that they have shown says Dragon Race on it.
It also clearly states on the Heavensward teaser site that they're not related to dragons and cite various examples as to why they're not.

Taken straight from the teaser site:

The curved horns and beautifully patterned scales that characterize the Au Ra oft give rise to speculation that this Hyur-like race native to the Far Eastern continent of Othard are, in fact, the progeny of dragons. This, however, has long been disputed, with scholars citing several distinct differences in the two races as evidence of decidedly dissimilar roots—the first and foremost being the enhanced hearing and spatial recognition granted by an Au Ra's cranial projections (traits not attributed to draconian horns), and the second being the gross disproportion of body mass between Auri males and females (again, a trait widely unseen in dragons).