Canon has already announced 4 RF lenses now: They are RF 28-70mm f/2L, RF 24-105mm f/4L IS, RF 50mm f/1.2L, RF 35mm f/1.8 Macro IS STM. And there are already two RF lens patents: RF 24-70mm f/2.8L IS, RF 24-300mm f/4-5.6L IS. Canon already mentioned in their announcement video that they are working on “a series of fast f/2.8 lenses and more”. Which means we may see these new f/2.8 zoom lenses in 2019 to 2020.
Below are the rumored RF mount lenses according to CR:
RF 14-24mm f/2.8L USM
The system will need a native ultrawide option and we think something like an RF 14-24mm f/2.8L USM is highly probable
RF 24-70mm f/2.8L IS USM
The classic standard zoom in a smaller size and with IS. We think this is highly likely to be one of the next lenses announced. We do think it’s possible we’ll see a wider focal range.
RF 70-200mm f/2.8L IS USM
They’ll have to complete the classic trio of zoom lenses and an RF 70-200mm f/2.8L IS USM is also extremely likely in 2019
RF 70-135mm f/2L USM
We don’t think the RF 28-70mm f/2L USM is the last f/2 zoom we’re going to see from Canon. A longer f/2 portrait zoom is on our wishlist.
RF 50mm f/1.8 IS STM
We think a less expensive native 50mm option should be on the table, though it may come much later down the road.
RF 24-300mm f/4-5.6L IS USM
All-in-one zoom RF lens for the Canon EOS R mirrorless camera.