Google's Jean-Baptiste Queru has announced today on the Android Building group mailing list that a small revision to Jelly Bean -- Android 4.1.2, build JZO54K -- is pushing out to AOSP (Android Open Source Project) right now. While the Android world is still spinning following a the leaking of a whole bunch of LG Nexus pictures showing 4.1.2 on-board, JBQ's only comments in terms of this 4.1.2 release are in reference to the Nexus 7. His warning to community builders of software for the Nexus 7 is that future variants of the device are coming with a different power management chip, one that is completely incompatible with the current 4.1.1 builds of the software.
Details are sparse at the moment, but we'll keep you posted as we do some digging and find out what this means as far as changes and updates go. If there are changes or fixes relating to other Nexus devices, you can bet we'll see OTAs start to roll out in due course.
Source: Android Building