GamersInfo.net has conjured up a short Q&A from a recent Warhammer Online: Age of Reckoning conference call they had with EA Mythic's Jeff Hickman and Games Workshop's Paul Barnett.
Q: How is your character created, how does it evolve, incremental changes, how it looks?
A: Five of the races have male and female. Greenskins do not, since they are space fungus [orcs and goblins grow from spores in the Warhammer universe], but you can play as an orc or a goblin. You'll have facial and body customizations, and racial features that will change as you go on in the game - for instance, a dwarf's beard will grow longer (stuff like that will probably happen 4-5 times over the course of advancement). Each class will have its own unique look, too, so if you're good, you should be able to look at a character and say "that's a rune priest" or "that's a witch hunter" - and get an idea of level by their look, plus their racial features (such as orcs getting bigger). Plus you'll get trophies from dead enemies (both in RvR and PvE) that you can hang off your character.
They told the artists "work harder or we'll beat you" to keep things unique, both on a class and an individual basis, so when you see a horde of black orcs, you'll say "That's a black orc", "that's a very mean black orc", and "all those orcs look different". They've only probably had one artist die on them so far...