The new bunch of CPUs will be with us next year along with 64bit fancy pants architecture, something that could open up a few doors for mobile computing, especially from a cryptographic perspective. Also if the rumors of the leap in power and consumption are to be taken as red (Snapdragon 8xx), then you really should hold off buying a handset you would be stuck with for the next 2 years. Especially if you love to out spec your friends - you might not give a shit either mind.
If the temptation of having a digit change at the end of your phones name too much to cope then you might kick yourself in the year ending in 15, your old handset in 2015 might be seen as very last gen, which means a lower resell price too.