It's been coming soon for a couple of months now, meanwhile Groq churns out a lot of other improvements, so to an outsider like me it looks like it's not terribly high on their list of priorities.
I'm really impressed by what (&how) they're doing and would like to pay for a higher rate limit, or failing that at least know if "soon" means "weeks" or "months" or "eventually".
I remember TravisCI did something similar back in the day, and then Circle and GitHub ate their lunch.