The AOSP has been tagged as 4.2.1 r1.2, and the small change log lists a few interesting bug fixes. Version JOP40G will have some power management fixes as well as a tweak to the way an EXT4 partition handles file creation. These fixes are not device specific, so they will affect the Nexus 10, Nexus 7, and Nexus 4. We imagine the Galaxy Nexus will also see the benefits of this build.
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