The Ausdroid Shop has all your Nexus accessories here.

Owners of the International unlocked GSM Galaxy Nexus should start seeing a prompt to update their phone to Android 4.1.1 (JRO03C), unfortunately those of you who purchased on contract from one of the Australian carriers you will still be required to wait for them to test the update before rolling it out. Unfortunately the factory image for the latest update has not hit the Google Developers page as yet but should be there soon.

As I have only just ordered my 2nd Galaxy Nexus and it hasn`t shipped as yet I can`t confirm the update but if you are the owner of an international unlocked GSM Galaxy Nexus and have received the prompt to update let us know in the comments.

Source: Nexus Google +, and Android Central.
Devices: Galaxy Nexus