Xenosaga? I doubt it considering the that branch of the Xeno franchise is considered a mistake by Takahashi, and Soraya Saga has some cold memories about it.
Xenoblade Chronicles X update for Switch? FAR more likely. The Wii U version was primed for expansions, with dark areas beyond the edge of the map that could easily have more continents. Not to mention the level cap seems curiously small, and there's so much more room for expansion in NLA and such. Monolithsoft went quiet on that topic. The plot line of XCX also ended with a massive cliffhanger.
The other possibility is a new story, it could take place in the near future, or in the distant future, even on another planet. But I think that is less likely than seeing a big expansion to XCX first.
I describe myself as a little dose of toxic masculinity.
