Well.. Lot of people get golden email without any GU.. so I think, we will never know what a good sign isAbsolutely feel your pain! Like others have said, it's probably a good sign that your tracker was updated.
Then again, I don't know if tracker updates even matter for us at this stage. I think our best indication of a PPR coming soon is actually a GU on gckey or of course a final decision update on gckey.
I didn't get any such update after sending the email to RROC. My last update is from when I called IRCC about a week ago.
Have you by chance requested GCMS notes recently?

No, I didn’t order GCMS notes..