Google has posted the 4.1.2 factory images for the non-playstore "Yakju" versions of the Galaxy Nexus, and for the world versions (i9020t, i9023) of the Nexus S this afternoon, giving users of these devices a valid safety net should they need one.
More interestingly, the factory image for the Nexus Q was also uploaded. It's still Ice Cream Sandwich (4.0.4) as expected, but we all hope that it's a sign that Google is finally ready to do something with the cannonball. Bring it we say!
If you're in need, or just don't like waiting for OTA updates, hit the source link and grab them.