This is the same head mold as the old optional head F-08, however, there have been some changes. The old F-08 had a very high forehead and was often jokingly referred to as a 'dome head', but the new F-05 has had the overly large forehead sized down considerably to be in a much better scale with other SD heads, and wigs now fit much more comfortably on it. Other than that, though, the head is basically the same.
Please click on the individual thumbnails to see the pictures full-sized.