That sounds like an R10, but with a full frame sensor.Canon are difficult to predict these days.
The "R Mkii" is apparently going to sit "below" the R6 (presumably this refers to pricing).
I think we can expect significantly lower build quality, a single card slot, only modest burst speed, probably no IBIS, and they'll probably use it to test out some new ergonomic features (as with the R and R7). Low res EVF, and possibly a fixed screen? Sensor could be 20MP, certainly won't be less, but could be 24MP or another rework of the 30MP sensor?