Where Is the Canon EOS R1?

The Canon EOS R3 has been quite well received, and though it has some top-level professional capabilities that help it compete with cameras like the Sony a1 and Nikon Z9, it is not meant to be Canon's flagship mirrorless camera. That title will belong to the EOS R1, whenever it gets here, but when will that be? In the last few months, Canon has continued to release new mirrorless cameras and lenses, but news about the EOS R1, the mirrorless equivalent of the 1D series, has been rather hard to find.