Mac will continue to boot normally, and you'll be able to log in again, and everything will feel quite normal.

Later on, we'll change OpenCore to where it doesn't take us through the boot picker, and it immediately loads macOS. We'll work on that later on though.

As for now, you have installed OpenCore, and you are ready to update macOS.

On newer Mac models, you may get a notification asking if you want to upgrade macOS.