Initial testing says no, but we'll see what we can do to it to make it run well.— Blowfish Studios (@blowfishstudios) July 21, 2017
Here is everything launching on Playstation next week!
In a recent interview, Bloodstained creator had this to say when asked about the porting process:
Currently, we’re not in the middle of porting to Nintendo Switch just yet, but we are starting porting to PS Vita. In comparison to that porting process, we feel confident that the environments will look pretty similar, but we can’t say for sure until we really look into the Nintendo Switch specs and see what it’s like building a game for it.
It's good to see that this process has started for the PS Vita. While it isn't a guarantee, it certainly looks like a cancellation won't be happening.