Autocar had a recent article about a rumored super Enzo that Ferrari has in works. A lot of it is speculative and the image is an enhanced image by the guys at Autocar.

http://www.bangkokpost.com/Motoring/...05_motor01.php

Personally I think going back to the old days of the twin turbo F40 design would be better. A barebones race car for the streets instead of a street car with racing heritage. The F50 and Enzo were/are great cars, but they are timid when you compare them to the raw appeal of the F40.