Android 4.2 Jelly Bean Is Worth the Wait
Before we get to the data, I should mention that this latest Android update is worth the wait. You've got 360-degree panoramic image capture, native text swiping on your keyboard and interactive notifications, just for starters. Read the entire list of improvements here.Nexus Series
Google's Nexus devices were the first to receive the Android 4.2 update. Galaxy Nexus, Nexus 4, Nexus 7 and Nexus 10 have all received the update to Android 4.2. Only the first two Nexus smartphones, the Nexus One by HTC and the Nexus S from Samsung, remain on the sidelines.Samsung
Updates for Samsung devices have been much slower to come. This is mainly due to the TouchWiz interface, which must be updated as well. Before a new Android version can be uploaded, extensive tests and conducted to ensure that the customized software will interact smoothly with the updated system. And that takes a while. Samsung is still in the midst of updating their phones to Android 4.1In November, Samsung announced it had plans to roll out Android 4.2 to its "Galaxy portfolio of devices" in "due course." They will probably update the Galaxy S3, Galaxy S3 Mini and the Note 2 first. SIM-free devices will receive the update first, followed by contract-locked models.
HTC
HTC's Sense interface also slows down the update process. The company has confirmed that at least the HTC One X+ will receive an update to Android 4.2, but it's unclear the fate that will await the One S and One X.
Motorola
Although Motorola has become one with Google, the subsidiary is still operating independently of its parent company in many areas. Motorola devices are skinned with Motoblur, a customized interface. Even though the software has been trimmed here and there, it still takes longer for models to be updated than it does for the Nexus line.When it comes to Android 4.2, it doesn't even appear to be on the company's radar; Motorola's update page doesn't go beyond Android 4.1. Since not all of the top models have received 4.1, one can only guess when 4.2 will roll out. We might get there in the first half of this year, but that's pure speculation at this point.