The folks over at ZDNet have detailed the new user interface coming to the Xbox 360. Among the additions is PrimeTime - a gameshow themed virtual area.

The first major change to the system involves basic navigation. The top-level channels now consist of six items that closely resemble the menu structure of Windows Media Center: Spotlight, Games, My Xbox, Primetime, Community, and Videos. Each option contains additional functionality in submenu options and contains major innovations that we'll detail below.

Users who are familiar with the traditional five-bladed menu structures will be relieved to find that the old system remains intact--they appear whenever you press the Guide button on the gamepad. Pressing the button pops up a miniature version of the original blade system. The new miniblades will be accessible anywhere, even while in a game.