On the other side, Sony is really preparing for an "big hit" in spring with an successor of the Alpha 7 36MP series. My granddaughter in law is working for this Company and heared an verfied rumor. Alpha 7 high MP for sports..... It couls be possible that Canon rises the MP to 24 and makes ist faster (AF, fps) and better low light performance.... (But for me, there will just be an small percentage that this will happen as Canon knows how to milk us....)
the "milking us" part will soon be over. More precisely: the moment Sony delivers a "really right" mirrorless A9, flanked by a "holy trinity" of f/2.8 FE zooms. No more need for a marginally iterated 5D Mk. IV then.
+1 - my body is ready to switch !