Sony will stream PS1, PS2 and PS3 games to the PS4. Tbh I hope they stream to PC too. I need to catch up with some Final Fantasy games
Good thing they have upped the RAM memory and even better made a it easier to develop for the PS4. This was really hampering some Studios.
Don't compare RAM on consoles to RAM on PC's though. A PS3 or XBOX360, doesn't do Superfetch, load huge amount of the OS processes in main memory and other stuff.
Watch Dogs looked real nice, hoping for a PC release