Ehh, wouldn't get hopes up. Remember early PS3 launches where PS3s would die months later. We have to hope Sony takes precautions for console longevity. The last thing I want is buying a PS5 and ends up dying months later.
Backwards compatibility.... something that died for me a long time ago. I keep my old games since the 90s, still play 'em and love 'em the same. They can keep that bullshit marketing tactic to the people that still care, but it doesn't work on me.