PS5 came out 4 years after the PS4 Pro, so 4 years is a good guess, most people think 2028 is when PS6 will come out, there is also rumors that the next xbox will launch in 2027.
i think it's very unlikelyIf there are PS5 Pro exclusives, I'll consider it. My PS5 has been collecting dust for a bit so as long as I can find more value in that, I see no reason for the upgrade.