The Android Marketplace has received an update pushed out by Google, changing it significantly. This version 3.0.27 of the Marketplace include a UI overhaul and added functionality. The visual changes seems to make the Marketplace on both tablets and mobile devices look similar, you’ll notice the Honeycomb-ish look more if you’re on a phone. The update also adds the ability to purchase books and rent movies.
If you’re yet to receive the update and are a tad impatient you can head over to the Android Community to download the APK.