I've posted once or twice about wanting the new (hopefully) V8 E90 M3. However, that new engine is something else. According to Autoweek, it's lighter than the 5.5 blower motors in the E55 and SL55, etc. and WAY more powerful. This means, it could even fit in C-class level cars...
The potential E65 could give the new M5/M6 a run for the money.
[runs for cover...]