Will there be support for Camera RAW/LR/PS for the Canon 28-70/f2 soon? If not how would I make a custom one or has someone already invented that wheel?
No, the embedded profiles are automatically applied. You could not even turn that off if you wanted to. There should be a note at the bottom of the Lens Corrections tab that says that the profile is applied. The only exception to this seems to be the RF 24-105 lens. Adobe did make a profile for that lens, so perhaps Canon did not.