We have both Zoe Saldana and Alice Eve as the lead females. They are meant to be Spock and Kirkís love interest but I also think that they will be more than that.
JJ Abrams does say that Uhura is a very strong and independent woman and Carol Marcus's intelligence will be a key factor in the villainís defeat.
They are not just pretty faces..However Uhura does seem to be crying in the trailer.We all knowing crying represents one of the characteristics of stereotypical weak females.
I am not expecting Trek girls to be like Bond girls but I don't think Trek girls are Bella Swans or old school Disney Princess.
Some male trek fans are upset about how the core trinity of Trek, which is Spock-Bones-Mccoy has ben replaced with Spock-Uhura-Kirk.
So.......there is no need to be worried about the dominant male establishment.
Two decent female leads won't make up for a male dominated establishment if there are no decent women in supporting roles. Having seen the cast list, it still looks as though they've introduced even more new male characters than women again and some of the new female characters appear primarily to be mothers and sex objects, exactly the same as the first movie. I'd like to give him the benefit of the doubt but I have insufficient evidence to do at this stage.