Damn day one cop no questions asked since it's BC with PS4. it would be nice if previous gens were BC also but it's definitely not necessary. It seems like they ain't fukking around with the power so I wonder if they will do a mid gen refresh. I will say with this announcement they made it harder to budge there base. Only way they can fukk up is make the price absolutely nuts but they already learned there lesson from that.
All they need to do to steal the momentum of E3 is do a conference showcasing the power of PS5 and announce a March 2020 release date.
Sony was known for BC before the PS4, Nintendo and Sega weren't doin that shyt before Playstation. The PS3 cell processor shyt is what killed BC for the PS4. Granted, they could have gone the software emulation route, but the numbers didn't make sense obviously (selfish reasons included).
Gonna be interesting but withe BC I can do what I did with my PS1 and PS2 and use that shyt for trade in credit towards the new console because of the BC.