We've got an LG Nexus system dump and endless desire to spoil every Googley surprise we can. Today's edition of the Android 4.2 Teardown could be alternatively subtitled "The Super-Serious Security Edition," because we're talking about the sort of stuff that should make your sysadmin jump for joy.
Please keep in mind this is just as forward-facing and time-ambiguous as all my other teardowns. This is a list of new stuff in the 4.2 dump, not a list of "confirmed for 4.2" features. Anything could be cut or not fully implemented by the time 4.2 rolls around; similarly to how bits of Android are currently multi-user aware, yet multi-user functionality isn't accessible.