Gender neutral is not identifying with being male or female, but rather as neither or in between. A person could be biologically female and identify as gender neutral (or as male) for example.
I saw this awesome chart once as part of a presentation this awesome speaker did for one of my fiance's classes. It had biological sex, gender you identify with, gender you present yourself as, gender you are attracted to... showing all the different combinations that are possible.
Yes I said awesome chart and awesome speaker in the same sentence, but really they were.