Google pulls the Android 4.2 factory image for the Google Nexus 4
There is some speculation that the removal of the factory image has something to do with the dormant LTE radio that lies inside the Google Nexus 4. A hack has allowed those near a Band 4 (AWS) signal to have some LTE connectivity on the phone. If Google is planning to send out an update to block any LTE hack from working, the pulling of the current factory image would make sense. It is also possible that Google was feeling some heat from the FCC on this subject.
source: NexusFactoryImages, TheAndroidSoul via AndroidCentral