At the moment, The Witcher 3: Wild Hunt is going to be 1080p on PS4 and 900p on Xbox One. CD Projekt RED is dedicating themselves to adding as many graphical and gameplay improvements to the game after release as possible, but Senior Game Designer Damien Monnier is not sure that DirectX12 alone will allow the Xbox One version to be upgraded to 1080p. But regardless, he says that the studio will do their best to see what DX12 is capable of. He had this to say on Twitter.
1080p or 900p, it doesn’t matter. The game looks fantastic.by