BMW is now fully aware of the consequences of not making the US market happy with their offerings. This is based on the fact that the US outsold every other market in the world, including the home country of Germany (that didn't make BMW AG very happy).
As such, the M5 and M6 are now available with proper manual transmissions. And as such, the E90 M3 was already in the works to premiere immediately after the new M3 is introduced to the US.
The funny thing is that the E90 may even end up being a US-only car! Imagine that, the US market getting something the rest of the world doesn't. LOL!