That was the plan with DX10 and we have seen, how that one went. The thing is, the majority of gamers will update based on the available cash, and so gamedevs

That was the plan with DX10 and we have seen, how that one went. The thing is, the majority of gamers will update based on the available cash, and so gamedevs will be targeting the expected hw base at the time of release. So it really depends, whether you except the gamers to go on spending spree (nvidia and intel would certainly love that), or not.