Just a little something that all people who have pre-ordered the Xbox One, or are intending to purchase it as soon as it is launched (good luck with that, if you haven't pre-ordered it already), should know. Real name IDs will not be supported by the console at launch. Meaning, if you are going to use the search function to look up some of your friends, you will have to type out their gamer tag (xx123fragger_ladiesman) rather than simply typing their name out (Dean Winchester).
When asked as to why this feature isn't a part of the launch package, Microsoft simply replied "Our teams are working hard to deliver a quality experience for Xbox One. This means prioritizing some features and sometimes postponing others for a later update."