Between prototypes in the wild and establishment of a production model there is the unknown to which only Canon is privy to.
I would say expect it when you see it!
That can be tomorrow, day after, next month or next year and you wouldn't know given Canon is extremely discreet about launching new products.
My 2 cents ...
Cheers ... J.R.
5D3, 6D, 600D, RX100
16-35L, 24-70L II, 70-200L II, 100-400L, 50L, 85L II, 135L, 24TSE, 40, 100 macro, 18-55 II, 55-250 II, 600RT x 4
I come here to learn something new, not to learn how bad my gear is - I know that already ;-)!