I run a desktop system and a laptop system with Quicken Windows subscription installed on both. I do not use any cloud storage or sync. I manually copy the local data file back and forth between the two systems daily so that I'm always working with the latest data file on each system.
My desktop system is running R49.22 for about a week. My laptop was running R48.15 during the same time. When I had the laptop version check for new updates, it said I already had the latest. Today, I ran the check again and it updated to R48.18.
I'm puzzled by two systems running the same local data file running two different versions of Quicken? I guess it's not a problem, but I'm curious.