Google has recently revealed the next Android version Android 5.0 Lollipop recently. The Android 5.0 comes to new devices as built in and comes as a update for some selected devices. If you want taste the feel of the Android 5.0 Lollipop before the actual launch you can download the Ringtones and Wallpapers to bring Android 5.0 look to your device.
Download Android 5.0 Lollipop Ringtones and Wallpapers
The wallpapers are in HD quality, you need to crop the image before you set as a wallpaper. The ringtones link contains all the system sounds, notification sounds and ringtones.