So assuming this guy knows what he is talking about, he seems to be saying that programming for DX12 is a whole new ball game. Regardless of which currant cards can or cannot do this or that feature, as that is a completely irrelevant argument to have as by the time this is released (later this year ?) and then developers get to work on it, the first games will be out in what 2 years, maybe more. So those with 290/380/470's

will be able to say yay my card can use all these features at 10fps, haha you suck NVidia.


Anyway more seriously, it would seem that the developers might have to put more work in to get all these new features to work. It might make the speciality features like TressFX and Gameworks all the more appealing to developers as hopefully it will cut down the time they need to get to grips with the new way things will be done. could mean new games arrive a little sooner.
It all sounds exciting, all we need now is some actually good games.