What i would like to see is weather sealing,inner focussing and f1.0 but honestly i guess your right probably a long way off so i think i will wait till august and go for it
85 1.0 would need a 85mm front element at least. if you search better IQ then 1.0 will do much worse than 1.2 or 1.4, compromises quickly increase. Further, costs would increase dramaticly, not only profit. If we look back the last years, openings of new versions were slower not faster, in my opinion for two reason, first to make IQ improvements possible and second to improve profit.
At unliked DXO there is an article which tries to proofe, that sensor efficiency lowers below f=2.0 dramatically, and that the cameras compensate this by improoving ISO secretely. If this is true, the only gain from a lens below f1.4 is shallower depth of field, which makes almost all of the picture blured, so border sharpness doesnt matter as much as for other applications.
Taking this into account makes the currrent version of this lens look even better and even more specialised compared to the f1.8 version.