I dont think there will be another z4 neither version has been a roaring success (dont get me wrong I've had 2 of each and I love them) so im guessing they will go smaller lighter more like a z3 which is fine but doesnt really do it for me ,so I guess when the time comes im going to be looking at boxster/cayman , the M235i might do it but I dont want/need a practical car, I know im going against the general concensus but that concept doesnt do it for me