After Nikon announced that their next flagship camera sensor will have fast enough sensor readout speeds so that they no longer need a shutter (mechanical or electrical), it implies that they no longer need a global shutter. I'm guessing that Canon and others will do the same in the future. (If it's fast enough, their marketing department might call it a "global shutter" to boost sales.) If Canon ever does drop the mechanical shutter, I hope that they have a slide-down neutral density filter instead of a "protective curtain" used when the lens is removed. That would allow ND photography in addition to protecting the sensor during lens changes.I'm not ready to call CR3 on a global shutter, but good sources have said that it's in play.