I don't think so. There's totally room for a 50 1.2, 1.4, 1.8 in the lineup.To the people asking for an RF 50mm f/1.4:
It's 50mm f/1.2 or 50mm f/1.8.
Take your pick.
In fact the 1.4 could go one of two ways: compact double-gauss design with pedestrian image quality, or a new-style computer-designed formula like the Otus, RF50/1.2, etc. In fact if they made both types I could picture getting both: the sharp version for specific products or the compact one for daily grab shooting, holidays etc.
One of my old Leica buddies had a gag that he had finally settled on the ideal M outfit: 50/1.0, 1.4, 2.0, and 2.8. And he was only half-kidding.