近年MicrosoftがDirectXの将来の話とかロードマップを語る機会は少なかったと思いますが，GDC 2014ではいくつかセッションがあるようですね.
DirectX: Evolving Microsoft’s Graphics Platform (Presented by Microsoft)
http://schedule.gdconf.com/session-id/828184
DirectX: Direct3D Futures(Presented by Microsoft)
http://schedule.gdconf.com/session-id/828181
特に”DirectX: Direct3D Futures”の方は新しいAPIについての話をしてくれそうな感じですね.
Come learn how future changes to Direct3D will enable next generation games to run faster than ever before!
In this session we will discuss future improvements in Direct3D that will allow developers an unprecedented level of hardware control and reduced CPU rendering overhead across a broad ecosystem of hardware.
If you use cutting-edge 3D graphics in your games, middleware, or engines and want to efficiently build rich and immersive visuals, you don’t want to miss this talk.