I think it actually is MH in HD. I bought it along with my PS4 Pro a while back, and while some quality of life improvements are implemented, I was overall disappointed. Same old MH, with a fresh coat of paint.
OP: I wouldn't trust Capcom with anything at this point. I can picture them taking MHW, hacking at stuff (resolution, textures, AI, shadows, etc) until it runs at a respectable frame rate, then call it quits. And then they brainstorm a chibi version of MH for the Switch, to "better fit the demographic".
wouldn't trust them either, on the other hand it could be true somehow since MHW would sell on Switch, didn't try the game yet so I can't really comment on advanced the use of AI seems
don't mind my username, that was more than 10 years ago, I'm a different person now, amazing how people change ^_^