I could not seem to find an answer, when will there be profiles for the new RF lenses? took delivery of the new RF100-500, 600, and 800, yesterday and they are not supported with the current version of Lr.
They will be added when/if they are added. Adobe never makes announcements like that in advance. You will know when they are added because they will be listed as features in the "What's New" section for a Lightroom update.