I went to update to Apple Intelligence Beta 15.1 on Sequoia yesterday when it dropped, and I’m still waitlisted. The weird thing is, I had it on my Mac within a few minutes after downloading the beta, but then restarted the Mac and it now says “joined waitlist” and still does today.
Sequoia Beta 15.1
I don't even see Apple Intelligence in settings. Perhaps it's already been taken down?