After long last, and by popular demand, the four new tail options are finally in stock and available! These are the GP tail style, with taillight support, in carbon and fiberglass, and the passenger seat replacement, also with taillight support, in carbon fiber and fiberglass. You can view the official product announcement here:
http://www.rc390-forum.com/forum/formula390/1548-street-tails-stock-ready-ship.html#post16367
http://www.rc390-forum.com/forum/formula390/1548-street-tails-stock-ready-ship.html#post16367