Thanks for that link. Very interesting.
1. There will "always" be a CSL version of the M3.
2. Turbocharging is not ruled out in the future.
Some of the not-so subtle criticism of AMG was interesting as well, such as "If you only develop one engine for all your cars, then you cannot have the perfect car. If the engine in the smaller car is too big, you will not have the right harmony." Very zen.