OK, judging by YouTube unboxing videos, I can definitely verify that it does NOT ship with JOP40C out of the box. It ships with some earlier build. Nobody seems to scroll down so I can see the build number, but I can tell it's an older build by the baseband. It ships with 1700.24, but JOP40C uses 1700.33.
So, when somebody gets their N4, if you wouldn't mind, please (before installing any OTAs) do the following for me:
1. Reboot the phone into bootloader mode and tell me the bootloader version. It may be MAKOZ10L but I'm not sure so I'd like confirmation.
2. Android build number.
3. When you get the OTA notification to update to JOP40C, could you check logcat before applying the update and get the URL to the OTA file?
I would normally do this myself, except I won't be owning a Nexus 4 straight away since I'm on Verizon.