We're told one of the lenses coming from Canon in 2019 will be an RF 50mm f/1.8 IS USM. We're also told that this lens will be built much better than the Canon EF 50mm f/1.8 STM and include USM over STM.
I think if we're getting an upmarket RF 50mm f/1.8 IS USM for the RF mount, we're not going to see another 50 f/1.4 from Canon for quite some time, if ever. That said, with the price of the Canon RF 50mm f/1.2L, there's definitely going to be pricing room to fit in another 50mm lens.
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