The tweak features a fully revamped app switcher experience by showing card-like icons instead of simply showing the app's icon. The switcher also has updated music controls, as well as quick access to wifi, bluetooth, brightness and other settings.
Auxo is currently only supported on iOS 6 for iPhones. iOS 5 integration should be coming next week, while the iPad version is slated for early 2013. You can purchase Auxo for $1.99 in the Cydia Store.