Yeah it's here
Google posted the 4.1.2 factory images for the “Yakju” Galaxy Nexus as well as the international versions of the Nexus S (i9020t and i9023). They also offered the Ice Cream Sandwich 4.0.4 factory image for the Nexus Q.
Hi, i just bought my galaxy nexus 2 days ago..
and after update via OTA, my device was updated from ICS to JB (4.1.1)
but after waiting 2 days, i am eager to update to 4.1.2..
at first i tried with incremental update from 4.1.1 to 4.1.2..