I get that fixing hairstyles to races takes time and it's only been about 3 months since ShB launched but to be honest I'm afraid that the "we'll give new hairstyles to Viera and Hrothgar" thing will join the additional Egi glamours for Summoners in development hell.
I really hope that they'll fit the legacy hairstyles to Viera (the wording in "we'll give them additional styles but they'll be race-exclusive" from the past interview troubles me) and that for Hrothgar they'll continue to add more hairstyles as promised and (hopefully) allow them to be changed in the aesthetician.