Why does my application only say Logic Pro and not Logic Pro x (in the top left when it's open)

Sorry for the noobie question, but I just got Logic Pro for the first time. I've watched a lot of YouTube videos of people using Logic and their applications/programs always say "Logic Pro X" in the top left of the screen. Mine only says "Logic Pro." Is there a difference? I'm thinking it's different based on the version of Logic or the computer type? I have the new MacBook Air with M1 processor and the latest version of Logic I believe, 10.6.1

Thanks for any information.