Over on the rebuild server (the test server that is changing the game on the fly), Neowitz has remade the Mascu race. They are now a neutral race, where you can decide which faction to choose from later on.
The Mascu can only be certain classes now as well. They can be a Guardian, Berserker, Mage, Paladin and Assassin.
Lastly there is now an option to make a half-human/half mascu race. They too live with the mascu and share the same traits as them.