Yep, Only male. Splash Damage has stated in a few interviews that adding in a female body type would have halfed the amount of customization available to both sides. And i agree, Would you rather have Male and Female each with 30-40 pieces of clothing, Or a single Male character type with 80+ pieces of clothing.
well, after play MGO4, and seeing the customization of the female characters, it was pretty much the same... as many female gamers as i've seen complaining about lack of female characters in brink, i think either way it would've still been a decent choice... appeal to female players more, or appeal to a wider audience and have more options overall? personally, i think too many FPS have been sausage-fests, and a little t&a never hurt anyone...
remember, you can't motorboat a personality