remember that list of rumors pre-TGS? all happened but MHP3HD for Vita and Bayonetta 2.
For the latter we have some information that apparently the project was on hold, but on the former nothing came out.
They're still getting manufacturing to a point where they aren't taking a loss on each unit sold, so it seems unlikely that they'd be getting more efficient parts this year.
And more generally these rumours seem like someone made some seemingly super obvious predictions, more than anything else. Because unless MH4 is a 2013 title I don't see why Capcom would release two new games in the same year. Unless they've entered franchise-milking mode.
Yeah, I know about the very good Nikkei track, but the other times those were news, not rumors from a insider. And he said so far things that seems reasonable so much anyone could say that: MH Vita, even if it seems Capcom wants to bring the audience to 3DS...but it's Capcom after all XD ; 3DS Lite, without a release period.
I just don't know this time. And I repeat: a MHP3rd HD Version would be a bit useless, at this point.