it's probably going to be on a 3 series slotted between the v8 m3 and the normally aspirated 330i.
the jump from the 330i to the m3 in price and performance will be so great, that they had to slot something between it.
i think it might also be on the x3. for those that want more power.
i wonder the reliability of turbo systems vs. Normally aspirated.
and i really wonder if they eliminated turbo lag. that we have to wait for until it comes out.