Okay. I doubt this to be the case, but an idea ((Which may have come up already, I skipped ahead since I figured by the time I read 15 pages, I'd have another 15 pages to read on this contentious topic)) came to me.
Maybe we'll see a male Viera in 4.55, and they aren't showing them so said character will be the first glipse of them.
Mostly this was the only thing that I could come up with at this point for why we haven't seen anything about Male Viera, even a "This race is female only, stop speculating."((As noted before, even if the Models aren't done, they should have been able to show us design sketches))
Otherwise their silence on the matter is a little tone deaf. ((Or hypothetically, they're drafting a proper response that won't be misconstrued.))