Canon filed a new patent application of a new telephoto prime lenses for the Canon EOS R full frame mirrorless system. These products are the RF 85mm f/1.8 and RF 100mm f/2.8 Lenses.

During the Canon EOS R5 development announcement, Canon also announced that there will be a total of 9 RF lenses coming in 2020, including already announced RF 24-105mm f/4-7.1 IS STM Lens (B&H, Adorama, Amazon) RF 100-500mm f/4.5-7.1L IS USM lens, Extender RF 1.4x, Extender RF 2x.
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https://www.dailycameranews.com/2020/04/canon-filed-patent-for-rf-85mm-f-1-8-rf-100mm-f-2-8-lenses/