
A dump of Android 4.2 with Nexus 4 was posted on the Web

Already on November 13 of this year, the Google Nexus 4 smartphone will go on sale. But applications, wallpapers, ringtones for this device are already available, several resources laid out a dump of Android 4.2 with Nexus 4. True, this dump is not from the final version of the software for the specified smartphone, but only a pre-release.
You can download a dump, for example, from here or from here . The dump contains ringtones, wallpapers and a couple of videos, one of which shows the toy Android in space.
It is clear that here you can find the latest system applications for the keyboard or camera. Some of the applications may not start on previous versions of Android, or may start with an error. So, before trying all this in work, it is advisable to backup your data using ClockworkMod or TWRP.
Some applications cannot be simply installed, they will have to be flashed. Of course, you also need to be careful here.
By the way, Google has not yet posted the source code for Android 4.2 Jelly Bean, so third-party developers can use this system dump to perform reverse engineering.