Microsoft has whipped up a teaser site for DirectX 12, indicating that the next iteration of its longstanding 3d graphics api will be unveiled at the 2014 Game Developers conference, during a presentation scheduled for 10:00am PST on March 20 (via The Verge):

More details will be outlined on stage at GDC 2014 in a sponsored session called "DirectX: Evolving Microsoft's Graphics Platform," presented by Microsoft's Anuj Gosalia. The preliminary notes for the session say that developers asked Microsoft for better tools to "squeeze every last drop of performance out of [their] PC, tablet, phone and console." Attendees are invited to "come learn our plans to deliver." Another session, helmed by Windows Graphic development lead Max McMullen, will center on "Direct3D Futures."

Little else is know about what Microsoft has planned for DirectX 12. The Verge notes that the teaser page displays the logos of chipset manufacturers AMD, Intel, Nvidia and Qualcomm, indicating wide support from the industry's most prominent players.

The Verge speculates that Microsoft is likely gearing up to package DX12 in with the next major iteration of the Windows operation system, which is being referred to as Windows 9, and supposedly coming in 2015.