At long last, Android 4.4 KitKat for the Nexus 4 is out. Download links to the latest build of KitKat, KRT16S, are now live. Users can either wait for the official OTA rollout to reach their device (which began yesterday, and might take its own good time), or they can follow the download link and do it themselves (it's the exact same firmware, ditto). The installation steps are a simple Google search result away.
There are two files available for download, one is if you're upgrading from Android 4.3 Jelly Bean, and the other is if you're upgrading from an earlier version of KitKat (KRT16O). Also, your Nexus 4 doesn't need to have its bootloader unlocked to be able to flash (click for instructions) the new update. This is the second factory image made available for the Nexus 4 since the release of KitKat, and sports an updated build number. For now, that's all the information we have on the update. Don't hold your breath, we don't reckon touchless controls have made it to KRT16S.