What should I expect switching to Fedora?

I've been using Debian-based distros most of my adult Linux life, but I read recently that KDE has a better experience on Fedora than Kubuntu, so I want to try it out.

I already know that I won't be able to use apt, but what other differences should I expect with fedora?

The do not have an LTS release? What is upgrading like? When should you upgrade if you want stability?