In a blog post announcing the delay for the Switch version of Hollow Knight, Team Cherry had the following little tidbit to say:
A final note: We receive frequent queries about release on other consoles. Though we can’t announce anything official at the moment, we can say we’ve been talking with the other platform holders, and they’ve been fantastic to deal with. They’ve also been really receptive to Hollow Knight. Once the Switch version is in the hands of all those backers who’ve been waiting so patiently for it, we’ll be properly exploring those options. Expect to hear more then!
I plan on picking this up on Switch when it launches, but the more people that can play it the better!