Does a new console generation have a launch title for old console generations?

I want to buy a specific game that will probably be a launch title for Xbox Scarlett and PS5.

Do such Launch Tittel usually also come out for the old console generation?

Speak for Xbox one and PS 4

At least the first years already, think that the first 5 years after the Xbox Scarlett and PS5 will be introduced, all titles still come for Xbox One and PS5. But believe both consoles come anyway only to the end of the year.

After 5 years, maybe only the main titles for the Xbox One and PS5, and after 10 years only single tracks.

But individual titles are synonymous for Xbox 360 and PS3.