Facebook has added support for non-binary genders! Hooray! It looks like a free-form field, but it actually only allows you to select from a list of almost 50 pre-defined genders. Here’s that list:
Female to Male
Male to Female
Let me know if I missed any from the Facebook list! (I’m sure there are some missing from Facebook’s list)
There are still a few issues people are running into such as being forced to choose Son/Daughter for children and “Interested In” is still limited to Female/Male, but at least this is a highly visible step in the right direction.