You have a New Version or PI available has been around for a long time.
This tool is slightly intelligent and will not pop up if your OS or version is incompatible (dependency checks in many cases). This may hide a PI update until your Calibre version is updated.
Why the need for Auto? User usage needs mostly dictate when needed. Got a ancient device that works with YOUR current Calibre? Why update (
and burn Kovids bandwidth)?
Need a new Feature or got new devices that don't detect? By all means, click Get Update.
It is not a painfully long process, unlike the typical W10 ones, that grind for 10 minutes after the downloads complete.