I'm sure this has been talked about but if not check out this article. It talks of a light weight v6, 380-400hp dino and then the other one, project california one that was talked about already and in autocar.
http://www.italiaspeed.com/2005/cars/ferrari/05/dino/0405.html

http://www.channel4.com/4car/news/news-story.jsp?news_id=12219&ref=archive