Konami and Hideo Kojima released a current-gen to next-gen comparison video showing the difference between old and new consoles' versions of Metal Gear Solid V: Ground Zeroes.
Although some may not see much of a difference, some could argue that the Xbox One version is slightly lacking versus the competitor and that is to be expected. Kojima went on record last week praising the PS4 for its power and being "the closest to the photorealistic quality we are aiming at" according to VG24/7.
The prequel of sorts to Phantom Pain, Metal Gear Solid: Ground Zeroes, is out on March 18th for Xbox One, Xbox 360, PS4, and PS3. Pick one.