I'll acknowledge there's a possibility that they still have either male viera or another male-only race that has yet to be revealed. However everything about the way they presented Viera suggest that this is all they have. If they really did have something else up their sleeve you would expect them to at least hint at it, rather than just keep people completely in the dark. Especially with the remarks about Viera being the "last new race", it would be in especially poor taste for them to try and trick people into thinking they haven't got anything else when they really do. There's nothing for them to gain by keeping it secret, they're just going to have the community at their necks for months to confirm one way or the other. Not even mentioning male Viera or any other race AT ALL is what you would expect them to do if they have absolutely nothing else. They know that this revelation would be bad press at what is supposed to be their big PR event to promote the expansion, so they blatantly sidestepped the obvious question. They want to allow people to speculate and hold on to hope that they might still have something to show when they really don't, with the official deconfirmation coming at a time and place where the bad publicity will be minimized.
If Viera are really female only and there is no other new race, then they've really only made half a race, which is poor form for this team that gives the appearance of cutting more and more corners as the game goes on.
If male Viera are playable but they are holding out for a "just kidding" moment at Tokyo fanfest then they're stupid because in the meantime they're going to generate nothing but negative feedback from people who think Viera are gender locked.
If they're adding some other playable male-only race, or a second variant of female Viera, then they made a dumb decision. Not just because they're tricking people for no reason but because they already went through this once before in 1.0, where female Roegadyn and male Miqo'te were some of the biggest requests/complaints. Gender locked races just does nothing but create demand for the other gender.
Is there some kind of stone tablet at SE headquarters which is engraved with the commandment "thou shalt not make male Viera" and if anyone tries they get immolated like they opened the ark of the covenant? Refusing to put them in for lore reasons is a really lame excuse when male miqo'te have those same reasons and they went ahead and made them playable anyway, and people are happy about it. I want to know the reasoning here. At least be forthcoming about your decisions.
I have no personal interest in playing a male Viera, but I do love this game, and I want to see the dev team make the right decisions. Whenever they pull stuff like this that just fosters resentment and distrust, it upsets me, because I know they could have done better and made people happy but they chose not to. Between this and the whole limited job thing it's getting harder to have faith that this team can make the good decisions that they know people want.