Well, a girl link would make sense considering Link is supposed to be the player's avatar and restricting Link to be male would be unfair towards female gamers (which the Wii has more of than any other console).
As Malstrom said, it's a pretty stupid plot twist if people were able to figure it out just by looking at teaser art.
Stevey: Wrong way around, the arms are the hilt guard of the sword and spread out when it is at full power, he'd have to hold her by the head and swing her feet around.