Owner and founder of Rectify Gaming.
UPDATE 2: Dark Souls Remaster will be 4K/60fps on PS4 Pro, Xbox One X & PC. Switch will be 1080p/30fps on Switch when docked.
Here is a statement from the press release from Bandai Namco:
“Experience the rich world of DARK SOULS in upscaled 4K resolution with 60FPS when playing on a PlayStation 4 Pro system, Xbox One X, and PC. Also, 1080p resolution with 30FPS is available when playing the game on Nintendo Switch with its TV mode.”
UPDATE: It has been confirmed via the Nintendo Direct that Dark Souls 1 Remastered is officially coming to the Nintendo Switch on May 25th.
There have been lots of speculation as of late for the upcoming Nintendo Direct on January 11th and according to a couple sources from Laura Kate Dale, in the next few hours Nintendo will announce a Nintendo Direct Mini to air shortly afterwards showing 2018 software for Switch. As part of this Nintendo Direct, Dark Souls Remastered will be revealed, updating the original game to be playable portably for the first time. The sources also say expect it at the end of the direct.
A few hours later it will be announced that Dark Souls Remastered is also coming to PS4, Xbox One and PC. These ports are being handled by a separate company from the Switch port. Another change is that multiplayer will be expanded to support six concurrent players.
Also it seems like Bandai Namco will also bring all three Dark Souls games to the Nintendo Switch eventually, but expect the Dark Souls Remaster to be released in May on all platforms.