Hey MD, nice to see you again!
I’m afraid notifications are an all-or-nothing thing. The idea being that the site owner would also want to know if an event that has been submitted and published has also been changed.
I can see how limiting the notifications to publish status only might be useful–would you be willing to share that in our feature request forum? It would be great to see others add their votes for it as well.
Sorry for the bad news, but does this at least help answer your question?
Thanks,
Geoff