Everything is clean, the font is all new, the icons are bigger, and the colors match the categories as displayed on the Google Play website. There are also a few changes in the settings, namely in the auto-update section which separates out Wifi from your data connection to auto-update apps.
The app is pretty broken, and they aren't making it available for folks to try themselves. That will probably change shortly, nothing stays secret on the Internet for long. And while everyone is speculating that this is the change for the next version of Android, we all need to remember that apps like Google Play can be easily updated without a system-wide change.
[via Android Central]