In 35mm film era cameras weren't been upgraded each year at the pace as digital cameras are upgraded. Even digital Pro cameras aren't upgraded as often as entry level or mid level.
People were taking photos and didn't have much of headeache some(a lot) have today.
Corporations - cameras manufacturers do know pretty good peoples psychology:
They won't fool photo pros by upgrading pro cameras each year, but they can make $$$ by fooling photo hobbyists, beginners by "upgrading" entry level or mid level cameras.
All over internet, a lot of discussions about cameras - what that camera can do or can't. All camera can do - to use by a photographer - to take a photo. Photographers rarely do discuss cameras - they're busy taking photos with cameras they have.
Another group of people on the net - I call these "photo engineers", because what they do - discuss cameras, rarely can see photos taken by those people.
I myself? I don't care and wouldn't care about any upgraded camera, unless I can "squeeze" everything possible from that I have now...And I do have a lot to learn with one I have now.