The Nvidia Shield tablet is the only tablet outside the Nexus line to get Android 5.0 and it turns out Nvidia isn’t slowing down anytime soon, as it has now started updating the SHIELD Tablet to Android 5.0.1.
Nvidia added a couple of it's own features to this update like new effects for the Camera Awesome app, OpenGL 4.5 graphics, and some memory and performance improvements. This update to should be rolling out to your devices as we speak so check your software updates from the settings menu and see if the OTA is waiting for you.
Source: Nvidia