We have recently seen Canon discontinue more and more DSLR lenses as they continue their transition to mirrorless, but thankfully, there are a lot of mirrorless lenses on their way to replace them, and it looks like we will see three more quite soon.
Canon Rumors and Nokishita are both reporting that Canon will be announcing three new mirrorless RF lenses in the next month or so, the RF 100mm f/2.8L IS USM Macro, RF 400mm f/2.8L IS USM, and RF 600mm f/4L IS USM. All three of these lenses have direct counterparts for the EF mount, with the 100mm f/2.8L Macro being a popular choice both for close-up work and as an ultra-sharp portraiture lens, particularly given its more affordable price compared to dedicated portrait lenses. Meanwhile, the 400mm f/2.8L and 600mm f/4L are more specialized, generally used by sports, wildlife, and bird photographers who need a ton of reach with plenty of light-gathering power to keep their shutter speeds fast. In recent years, Canon released Mark III versions of both lenses that focused on reducing weight while maintaining top-level optics, and it will be interesting to see if they can make them even more portable with the RF versions. We'll likely see both these lenses in the hands of a lot of photographers at the upcoming Olympics.