No sooner than we got 4.4.1 with camera fixes galore, 4.4.2 started hitting Nexus devices. While most should have already received the update, factory images are now available for download directly from Google. They're not alone in this rollout, as the binaries are also available if you need that sort of thing.
As the old saying goes, "when it rains, it pours down binaries for Nexus devices." That old idiom is proven true once again today, as Google has just uploaded the latest batch of binaries to the Nexus Device download page.
The binaries essentially contain the proprietary hardware drivers that you won't find in AOSP for their specific devices. This go around it's for Android 4.2.2 (build JDQ39) for all of the latest Nexus gadgets: the Nexus 4, Nexus 7 Wi-Fi, Nexus 7 3G, Nexus 10, GSM Galaxy Nexus, and VZW Galaxy Nexus.
Yesterday, Android maintainer JBQ posted up a number of binaries and Android 4.1.2 images for multiple Nexus devices. Owners of international GSM variants of the Galaxy Nexus, though, were left out on the image side. Today, both the "soju" (Nexus S) and "yakju" (Galaxy Nexus GSM) have had their factory images updated to Android 4.1.2, and you can find those images here.
Google also saw fit to finally release a factory image for the Nexus Q, though it's based on Android 4.0.4.