From a Localization thread:
"Hello all!

Believe it or not, all three 'missing' character types have legitimate background stories as to why they weren't around in 1.0. These stories were actually conceived way back before the original launch, with plans on releasing all the juicy details via quests. Unfortunately a little thing called "Meteor" threw a wrench (spanner, for you sophisticated types) in those plans, and here we are.

While the lorelords have deemed it still a bit too early to release that forbidden knowledge, you can rest assured knowing that the stories will all be revealed in ARR. I personally enjoy the background for the female Highlanders. Let's just say they haven't been merely tending cookfires and mending tents these past few years. Those ladies are TOUGH.

As for naming conventions, you won't have to wait for ARR's release for those, as we hope to have a comprehensive guide out sometime during before or right after the launch of Beta. It will cover all 5 races (including both clans and both sexes) and should include a Roegadyn dictionary to help those looking to make a Sea Wolf.

I apologize for not being able to reveal anything with substance today, but the good stuff is right around the corner! We're almost there!"-Fernehalwes