I have a mac that’s on Ventura via OCLP. The OCLP app popped up today and said it had discovered that I was downloading Sonoma and wanted to download something in preparation for the update. I thought the app just was buggy, so I refused. A bit later, the notification from Apple popped up. I hit the X and checked if something was going on. Nothing happened.
I wonder @Shamino @blm and @kat634e do you run as admin user or regular? I am regular and have never had the OS installed before I confirm with admin password.