It's a CR1 and honestly, with some common sense, such jump in specs in 1D series from previous generation is highly unlikable yet people are stoked as if it is done deal. The wonders of how some people react to such threads never ceases to amaze me.
A few months ago I would have agreed. But now, in the context of the 90D and the M6II, these specs seem perfectly reasonable. Canon really made a huge jump in throughput.