Google has started pushing Android 5.0.1 to AOSP, and has also released the factory images for the Nexus 7 (2013, Wi-Fi), Nexus 9 and the Nexus 10.
Google has not provided any official change-log for the update, but looking at the small bump in the Android version, it is more than likely that Android 5.0.1 only contains some major bug-fixes and performance improvements.
It is also rumored that the release of Android 5.0.1 will be accompanied by the roll out of the Android Wear 2.0 update for Google’s smartwatches.
You can download the Android 5.0.1 factory images for the Nexus 9, Nexus 7 (2013) and the Nexus 10 from here. Google has not yet started rolling out the OTA, but once it does, be rest assured that we would provide you with a download link to it so that you can manually update your device to Android 5.0.1 instead of waiting for the OTA update.