Google Nexus 7, Nexus 10 and Galaxy Nexus Takju/Yakju Devices Gets 4.2.2 Jelly Bean JDQ39

Google owned Devices now advancing to Android 4.2.2 Jelly Bean. Google has began the release of the 4.2.2 Jelly bean with build number JDQ39. This is an update from earlier build 4.2.1 JOP40D. There is no official chagelog released by Google about this update but  +Android Police covered some important notes and were quite interesting new features.

New Features of Android 4.2.2 JDQ39 Update

• Toggle From Quick Settings, Better App Download Notifications, and Some New Sounds!
• Things we've discovered so far, in brief:
• Play Store downloads now show time left to download.
• Long-pressing Wi-Fi and BT now toggles them in the notification Quick Settings.
• More secure ADB thanks to the new whitelist.
• BT bug fixes? I've seen conflicting reports whether this is fixed - citation needed if anything's been done to it. Can you spot the right commits?
• Play a tone when wireless charging begins (if below 95% battery). Use new low battery and wireless charging sounds on Mako. Here are the new sounds: WirelessChargingStarted.ogg and LowBattery.ogg.

Those who missed or not updated yet can still manually install or update to JDQ39 via custom or stock recovery.
Galaxy Nexus (GSM) Android 4.2.2 JDQ39 (Takju only) - here
Nexus 7 and Nexus 10 Android 4.2.2 JDQ39 - here
Nexus 7 3G  Android 4.2.2 JDQ39 - here
Nexus 4 is not yet available as of this moment.

source: Android Police