The September 2013 issue of R&T was just shared with me. According to them them:
- The new m3/4 will have three turbos in a 3.0 liter engine making something on the order of 450 hp. It's believed too that the tri-turbo approach will reduce (eliminate?) turbo lag
- The M4 will appear before the M3 because both cars will share mechanicals and the sedan will need to have flared fenders to accommodate the wider track of the coupe
The article doesn't say much else of note, but there is a pic. I presume given the camo pics we've been getting here that it's a render.
Personally, I think BMW need to do something about the steering issues so often bemoaned in the F-cars before folks will flock to the M3/4 as they did in years gone by. $70K+ is too much to pay for lame steering IMO. Porsche have seemingly cracked the electronic steering nut, I don't know why BMW are dragging their feet on it.