About time! 75D and 100D have their 0-60 speeds increased (i.e. dropped) to 4.9s and 4.7s respectively. Makes sense because of the M3s sub 0-60 goal. Tesla is saying both hardware and software updates will increase the speed. This is supposedly on new MXs rolling off the line. I think existing X75Ds are already cable of 4.9s... so hopefully a software update will be sufficient. Brooks has already proven the software limited power output - ostensibly to create a market between the MX sub models. Btw, MS 75D will now do 0-60 in 4.2s... good luck ICE cars.