Nope, no Mithran Males. Absolutely nothing more than that has ever been stated and there are no Mithran Male NPCs in the game, either, there would be pics and threads about it flying about all over the internet

I hope they never implement Mithran Males. I know plenty of Mithrans in-game who would throw a serious fit after playing their Mithras this far and finding out that they can get a Male one, finally, if they delete and start over or buy annother content ID... and start over.