Yes it pretty much is useless for mobile, but 64-bit processing as become a buzzword thanks to Apple when they announced the iPhone 5S would support it. Shortly after, Samsung said it’s coming to their phones next year. At that point one had to wonder if Samsung was going to do this on their own or if they knew the Android software would support it very soon. It’s probably the latter based on the image above.
It was taken at the Intel Developers Forum and posted on Reddit by shuriken. You can clearly see “64-bit” so the theory is that Google is probably adopting it very soon, and most likely Kit Kat. Now I should point out that Intel’s latest Bay Trail chips support 64-bit so this doesn’t necessarily imply Google is going to add it to Kit Kat. Intel could just be saying that the chip supports it. ARM has also announced the Cortex-A53 and Cortex-A57, which both support 64-bit. Based on all of this, it’s probably a safe assumption that the Android OS will support it, if not this year, probably next year.
Again, I have to reiterate that 64-bit processing is nothing more than a fluff spec that is pretty much worthless for mobile devices until they reach 4GB of RAM. It very well could mean something by late 2014, but for now, no need to worry about it.