Yeah I'm holding judgement till pricing too, but... cautiously optimistic this thing could be comparable to a 1440p crushing, soldered on chip , small form factor pc, for maybe roughly the same price as doing a minisforum based sff build.
I am guessing that yeah, the Machine will be capablr of 4K60 the way a PS5 is (aka, its not, it does 2K and then checkerboards it), but, if you target roughly that level of hardware at 1440p, take advantage of a semi custom chip achitecture...
Could be good, no real way to know without testing.
But hey, Science is Fun!