some pics of the new m5 have been leaked from a track, said to be around 50-100 kg heavier than current e60, but boasting 560-600 hp
e36 m3 - 240 hp
e46 m3 - 333 hp
e92 m3 - 414 hp
Following this trend, i can see the new m3 being bumped up to around 450 hp/360 torque, but probably no more since they will be putting a lot of focus on shaving off weight. Going with the I6 turbo approach they hope to decrease emissions, increase fuel economy, shave weight, and increase power. They might use DCT to increase fuel economy even further. Will continue to follow this..