So the official name for the new Xbox 360 model doesn't inculde the word "slim," and rightfully so. The difference in size really isn't significant enough for such a name. What is significantly different is the new port on the back of the console, as well as its touch-sensitive buttons. The new port (seen just above the ethernet port in the photo I took) will allow Kinect to be used right out of the box. Older Xbox 360 consoles will need dongle. Another noticeable visual change is the X shape of the front of the console and the new placement of the grill vents.