From the PlanetXbox360.com feature article:
"Well, despite the fact that it didn’t quite roll out early in the morning as planned, Microsoft has finally provided Xbox 360 users around the world with a bold new interface, the first one being introduced for the system in three years. But this isn’t just a basic menu upgrade that features a bunch of gimmicky stuff. No, believe it or not, it’s actually quite useful, especially if you’ve been looking for new ways to exploit the usage of your Kinect. That said, it isn’t quite perfect, but Microsoft is certainly getting there. Once you download and install the new interface (which prompts automatically and only takes a few minutes at best), you’ll notice a screen featuring a big window in the middle and four smaller windows, two on each side of it. Usually, the bigger screen is saved for highlights, while the smaller ones indicate games that just came out, or other advertised content. Now, it’s no secret that Microsoft has become notorious with ads and promotions, and the new interface has plenty of them. That said, they don’t entirely clutter the space here, and you can skip through menus rather easily."