343 Industries has started to hire for the "next generation of game visuals in the Halo universe."
A job listing on Microsoft's careers site states that the applicant will have "DirectX graphics experience; Xbox 360 or DX11 experience is a plus". The latter is not supported by the Xbox 360 so it's a vague hint that the Xbox 720 will feature DX11 support. The job advert itself reads:
Microsoft Studios 343 Industries is looking for an experienced graphics developer to help create the current and next generation of game visuals in the Halo universe. Work on one of the most exciting and creative properties in the industry; Work with the incredible 343 team to help drive the future of Halo.
We are looking for an experienced graphics developer to help us deliver cutting edge graphics technologies for AAA experiences. Candidates should understand and have experience with how to bring great graphics to life.
Halo 4, the first major installment of the series not to be developed by series' creator Bungie, is currently scheduled for a global launch on November 6, 2012.