About devs knowing before hand the next system. They do know based on a new gen PS start being made when a current one released, the spec is somewhat guessed based on where the technology will be in 5 years by trends. Also don't forget Sony asks the devs what they want of the next hardware for years before launch.
What really changes in the 6 years is the details and the devkit, but most of the work start being made years before (with a very good ballpark idea of the power and features), or anyone think they make launch games in 6 months?
duduspace11 "Well, since we are estimating costs, Pokemon Red/Blue did cost Nintendo about $50m to make back in 1996"
http://gamrconnect.vgchartz.com/post.php?id=8808363
Mr Puggsly: "Hehe, I said good profit. You said big profit. Frankly, not losing money is what I meant by good. Don't get hung up on semantics"
http://gamrconnect.vgchartz.com/post.php?id=9008994
Azzanation: "PS5 wouldn't sold out at launch without scalpers."
