They are obviously lying abt the lack of support since the original Sony Xperia Z runs on the same chip and got kitkat also HTC butterfly will get kitkat with same chip set.,
And HTC still hasn't provided kitkat update for Butterfly 1st generation
ok, i don't own a find 5 but this is the lamest excuse. soc manufacturers not providing the drivers necessary is generally common, but there are plenty of drivers for this specific processor, the xperia z,zl,zr, htc butterfly, droid dna, nexus 4, optimus g have the exact same processor... what a lie !!
same with the one m7, it has 4.4.3 and is going to get android l oficially