The current UI is a bit different from this concept shown off earlier, but it gives you a general idea of the flavor of things.
At the Tokyo Game Show this week, Microsoft showed off an early demo of the Xbox One's revamped user interface. The demo was behind closed doors and the live beta testing code being shown was "not even close to final," according to Microsoft Director of Product Planning Albert Penello. But it still showed off what Microsoft is calling a chance to start over and remove some of the cruft that has accumulated as the Xbox 360 interface bloated up over the years.
"The 360 got a lot of features added to it unexpectedly," Penello said, "so there were reasons we had to do things in the dash because we didn't anticipate the way things were going to work in 2005 when you had the blades [as the Xbox 360 tabs were originally called]. So now we've been able to reset that and dramatically simplify it."
"Simple" is a good word for the Xbox One interface. Rather than explicitly separating features into different tabs as on the Xbox 360, the menu is now a grid of square and rectangular items that scrolls as a continuous horizontal line. It's a setup that will be immediately comfortable to anyone who has used Windows 8 or Windows Phone 8, and the explicit similarities are designed to provide "familiarity" to many users, Penello said.