Remember when people thought the Xbox One was called the Xbox Infinity? Turns out that actually was one of the names "in the running" at Microsoft for the console's final branding.
In an interview with Forbes, Albert Penello, Senior Director of Marketing and Planning for Xbox, said "The name Xbox Infinity was in the running, I can say that. [The brand guys are] crafty. Who's to say that they didn't leak that name out in the weeks ahead of the launch? They are very crafty."
I'm not the one to say. I have no idea. Why would they leak just one name, as a form of focus testing? Seems more likely it'd be a fake-out, using a discarded name to throw people off the scent.