A Reddit user going by the handle "WeeManFoo" was among the first to report receiving the over-the-air update on Tuesday, when he posted a screenshot that confirmed his Samsung Galaxy Nexus was running Android 4.2.2.
Around the web, other Android users soon chimed in, with owners of Nexus 7 and Nexus 10 fondleslabs also claiming to have received the update.
Curiously, El Reg's research didn't reveal anything about Google's latest mobe, the Nexus 4. It looks like the update has not yet been made available for those devices – but presumably it will be soon.
Just how much this latest minor-point release actually improves on the previous one, however, is not clear. The überfans over at Android Police have posted the raw developer changelog for the update, but although it lists lots of technical tweaks, it leaves the effects of those patches largely open to speculation.
Google has yet to issue a plain-language changelog for ordinary folks, and it did not respond to The Reg's request for further enlightenment. All the update's package manifest says is that it improves "performance and stability."
It's here, but what does it do? (Source: WeeManFoo)
Many users had been hoping that the update would fix an issue that cropped up in Jelly Bean 4.2.1, when music streamed over Bluetooth would occasionally "hiccup." But while WeeManFoo says his music seems to get interrupted less often with 4.2.2, he doesn't think the problem is entirely resolved.
On the other hand, Android Police's sleuths have been digging through the screens on their updated devices and have uncovered a few new features, albeit fairly minor ones. App downloads show animated progress notifications in 4.2.2, there are new toggle controls for Bluetooth and Wi-Fi in the Quick Settings, and Google has supplied a few new system sounds.
There's also a new security feature that makes it harder for someone to slurp the data off your phone using USB debugging. But unless you're an Android developer yourself, you may never even notice it.
Other than that, most of the changes in the latest Jelly Bean release appear to be strictly under-the-hood fixes.
If Google holds to its past practice, it may be weeks or even months before the update rolls out to every Nexus device. When owners of devices other than Google's Nexus line will be able to upgrade, however, is anyone's guess.
Courtesy of http://www.theregister.co.uk/2013/02/13/android_422_for_nexus_devices/