http://www.autocarmag.com/news_article.asp?na_id=214768
There were rumors going around a year ago about this, but then it seemed like they killed off the project. I guess it's back now. This may hurt M3 sales somewhat as the aftermarket will go crazy and have a lot of upgrades to offer for the twin-turbo 335i.
I think I saw this last week, seems like a really cool idea. I don't believe the article mentioned a North American release, anyone know for sure?