A photo posted to the Dungeon Defenders Facebook page is a tease, with silhouettes of something Trendy is promising for later this week. What the consensus seems to be is that this is the first look at opposite gender character options for each class. This would seem to hold, now that the game has released a full modding kit for the PC community.
If the guesses are correct, then we should be getting female versions of the Apprentice, Monk, and Squire, as well as a male Hunter. More details should be available later in the week.