Quick impression from the press releases:
Anyway the speed and AF and all sounds like out of the park, awesome.
The sensor is what it is. It would be DOA for a 5D4, but it's probably OK for a 7D2 (although not ideal and I certainly feel for the one body shooters who'd use this as their main landscape cam too, it'll still do 100% fine for many of those shots, but will struggle for any higher DR scenes and the colro filter array has been made even yet more color-blind).
The video looks pretty punted though in terms of quality. The video AF might be useful though.
If you don't hit DR-limited scenes much and never shoot video it's a total home run. Grand slam even (assuming it lives up to the words).
If you were looking to it for video it's a D+ if you care about all things plus video quality. If you don't care about the video quality so much at all, it's maybe B to A- depending upon unknown UI factors. No 1080pRAW, no 4k, apparently the same old smeary, squishy 1080 Canon DSLR-style 1080p. Vstly better video AF though and hopefully 2 stops better video SNR over the 7D (unless a few vague, hard to believe rumors about it still line skipping are true, not sure how that could be, it has so much power).
If you wanted an action cam plus great all around aps-c sensor it's mixed, probably truly great on the one hand and stuck in 2007 and not quite so hot on the other (although the not so hot part only affecting a sub-set of possible images, I'm sure it will be more than fine for all the rest).