Considering the company's love for pairing Direct X releases with newer versions of Windows, we might see this one coming alongside the Windows 9
On match 20th, game developers will be looking closely at the next version of Microsoft's graphics API se at the Game Developer Conference (GDC). Though Microsoft has decided not to reveal so much information on this, we do know for sure that AMD, Intel, NVIDIA and Qualcomm are onboard with it right now.
There is no detail available on the company's official website but we have been thrown a couple of good hints whicch came in through the GDC schedule for the DirectX event. From what the description tells, DirectX 12 will offer lower-level access to hardware following a similar approach like a AMD did with its Mantle API. This lower level acces means that you are able to get the most out of it and make better use of it.
We should be expecting an announcement for the DirectX 12 but it is to be noted that it will not be releasing till the next year. We can possibly see it coming along with a Windows 9 version since we are all aware how Microsoft likes to pair Direct X with new versions of Windows.