Canon R has a Canon RF lens mount and currently there are 43 native lenses available for this mount.
The latest released lenses that are compatible with the EOS R are the Canon RF-S 10-18mm F4.5-6.3, the Canon RF 24-105mm F2.8 L and the Canon RF 200-800mm F6.3-9.
Canon R doesn't have a sensor based image stabilization system but 27 of these lenses already comes with optical image stabilization.
Since Canon R has a Full frame sensor, it has a focal length multiplier of 1x so lenses will provide their original focal length on EOS R.
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Canon R Lenses with Image Stabilization
Canon R Lenses with Weather Sealings