Gamespot has confirmed that Capcom has no plans to localize Monster Hunter XX for the Switch to North America. Since the Switch is not region locked you could still buy the Japanese copy to play in North America, but being able to read and understand Japanese will likely be necessary.
The Monster Hunter series has a long history on Nintendo’s consoles — as well as the PlayStation Portable — and Monster Hunter XX is itself an expanded port of Monster Hunter Generations, a Nintendo 3DS game.
“Monster Hunter’s particularly huge in Japan, where previous portable entries have dominated the sales charts for months on end,” Polygon wrote about the announcement of Monster Hunter XX. The reveal that the series would be available on Nintendo’s new hybrid home and handheld system seems to have been well-received, according to analysts — soon after Capcom announced the Switch port of XX, Nintendo’s stock hit a nearly nine-year high.
The next Monster Hunter game coming to the United States is Monster Hunter: World, a title coming to the PlayStation 4, Xbox One and PC.