As I posted on our forums, you can now finally change your minecraft name! I signed up with my normal realname as a username thinking I’d be able to create a “character” at some point later. This was back in the early alpha and well I had no idea that your account name would be what would show up in game. If you too have wanted to change your username, now is the chance!
http://www.reddit.com/r/Minecraft/comments/2uqpzb/name_changes_are_out/