All that list says is "Here are some names who have expressed interest in making games for Switch" It's not a binding contract.
I have an expressed interest in writing a fantasy novel. Been saying Ima write the next fantasy best seller for years ... still haven't written anything yet.
Now if...
I haven't really had the chance to look into the Switch at all, but to my mind Ninty has the right basic idea. A hybrid handheld home console is what everyone's been expecting from them after all.
But barring gimmicks which will only hurt a console at this point, regardless of what the hardware...