I want to switch to final release and I don't know if I can in future, when I update to 11.01.
If you are on 11.0 beta, just unenroll your device. If you have moved to the 11.0.1 beta, then you either just ride out the beta cycle then unenroll when it is publicly released, or if you want to get back to 11.0, you'll have to reinstall.
Unenroll Your Devices - Apple Beta
How to unenroll your iPhone, iPad, Mac, Apple TV, Apple Watch, HomePod, or AirPods from the Apple Beta Software Program and stop receiving beta updates.