i agree with way to dawn, it's been awhile since the last kh, and even that last fm, so what i think their doing is their gonna take like an extra half a year to a whole year, skip giving ANYONE a final mix, and make kh3 the ultimatum of the kingdom hearts, most challenging, longest, best battles, storyline, and everything, meaning they won't be able to make a final mix, there will be nothing to upgrade
personally, i think that KH2FM+ was a stretch, they made KHFM becuase the japanese version of kh had less stuff that the rest of the world, so they made a better one for them, but japan and the rest of the world got the same KH2, so KH2FM+ was just a bit of a stretch (and yes, i know i can be very redundant in my posts)