Your phone or tablet's OS won't make much use of it today, but think about what this allows us to do tomorrow. I am loving the rapid improvement taking place in the ARM CPU arena. We used to have this sort of thing in the x86 arena back when AMD was capable of competing with Intel. Today x86 is just a slow trickle of incremental improvements. ARM designs are jumping ahead by leaps and bounds thanks to all the competition between Samsung, Nvidia, Qualcomm, and others.
Today your phone is just a phone. What if it were possible to get rid of your laptop or desktop by connecting your phone to a full sized monitor or HDTV and bluetooth keyboard + mouse? There's no reason that small device can't one day be the one you compose reports on, create digital art with, or program using. Today's solutions are great for content consumers, but as a content creator I'm tired of being chained at my desk in an office environment. I'm all for having my phone or tablet become a capable creative device with more flexibility than we have today.
Competition is good. Tech upgrades are good. More powerful mobile devices are good. Build it and people will find something to do with it.