Mojang announced today that the ability to change your player name will be available on February 4th, 2015. I'm pleased to say that the map software is ready for this change! If you change your name you may need to wait a day for the map software to catch up since it only does username lookups once a day. Once it finds your new name it should start using it right away!
So, is anyone here planning on changing their username? I'm happy with mine, but maybe there are some folks out there that aren't as satisfied.
For full details on this feature check out Mojang's announcement (https://mojang.com/2015/01/announcing-minecraft-name-changes/).