Some of the faster AF is due to the stacked sensor, which is only in the H2s, or at least that is what I have read. Fuji also said the “newer” lenses can handle 40MP, but I’m not sure what newer means.I don't "need" any of the advanced video features, but I'm hoping the advanced AF and buffer improvements make it to the X-H2 as well (although I don't "need" 40MP either).