that requires providers to encode the transport stream in H265 which is at this time or any near future not likely. streaming h264 to a box that supports h265 wont speed up anything.I posted another threat related to the new boxes with H265 decoding and the amlogic S812 CPU which supposedly the new compression algorithm runs efficiently with only half the bandwidth. I am looking into it because I have the same problem and I have 16 mbts internet but usually only runs 12 or 13 mbts. a box with this new decoder should be a big improvement, it is all is said to be.
the codec promises some awesome stuff, you are correct in that, and some early HEVC/H265 rips are already out for the few to test.
but before every box and your mothers laptop support H265 I do not think we will see it replace H264.