It was recently announced a couple days ago on Nintendo Direct that Dark Souls is going to be remastered for the Nintendo Switch and all other major platforms.
The game will be playable on an upscaled 4k resolution at a steady 60fps on PS4, Xbox One X and PC. Meanwhile the Switch version will be playable at a steady 60fps during portable mode and 30fps in dock mode.
"Dark Souls: Remastered" will additionally feature an online multiplayer game mode that can support up to 6 players.
To finish up this short post I'll mention that Bandai Namco expects the game to be released on 25th May of this year (2018) and the game will be developed by the same studio who worked on the original trilogy, the "From Software" studio.