Dark Souls: Remastered was due out on all major platforms in just over a month, on May 25 to be precise. It'll still come out that day for consoles and the PC, but Switch owners will have to wait until later this year.
Bandai Namco confirmed the delay this morning, saying that the Solarie of Astora amiibo and the Switch version would be "pushed back" to the summer (read: Australian winter):
The Nintendo Switch version of #DarkSoulsRemastered will be pushed back to Summer 2018, as well as the Solaire of Astora amiibo. We apologise for the delay but rest assured, the extra time will improve your journey to Lordran.
PC/PS4/X1 versions is still coming 25th May 2018.
— Bandai Namco UK (@BandaiNamcoUK) April 17, 2018
The company did add in a follow-up that the network test for Dark Souls: Remastered on the Switch would still take place, and that the new launch window "gives the dev time needed to make sure Nintendo Switch players can fully appreciate the true Dark Souls experience any time and anywhere".
'.For some, Dark Souls with Durante's excellent DSFix mod is just fine. But for others, only a proper remaster will do for something as iconic as Dark Souls. So if you're curious to see what's changed or updated in Dark Souls. Remastered, the answer is. well, not a huge amount..'
In other words, the game probably wasn't quite up to snuff on the Switch in handheld mode just yet. In any case, those looking forward to Dark Souls for the first time will still be able to grab the game on May 25. Just not on the Switch.