If the Android 4.4 KitKat OTA has yet to reach your Nexus 4, there's now an alternative way to get it by downloading the OTA zip. To install through this method you'll need to sideload through ADB, but you don’t need root access or unlocked bootloader.
Google rolls out KRT16S bug fix to Nexus 7 (2012 & 2013) and Nexus 10
The update, which has already begun rolling out to some users as an OTA, brings the build number to KRT16S, from the KRT16O of the original KitKat build that rolled out last week. This update applies to the Nexus 7 (2012) WiFi, the Nexus 7 (2013) Wi-Fi, and the Nexus 10.
Some Nexus 4 users are reporting that the Android 4.4 KitKat OTA has finally graced their phones. The update comes just hours after the Verizon Moto X received the same bump to Android 4.4 and after Google rolled out a bug fixing update to some of its others Nexus devices.
Download: Android 4.4 KitKat factory images for Nexus 4, all Nexus 7 models (2012, 2013) and Nexus 10
The Android 4.4 KitKat update will be officially available for the Wi-Fi Nexus 7 (2012 and 2013 models) and the Nexus 10 starting today, with the Nexus 4 and cellular Nexus 7 versions getting it "soon."
Ghosts of Nexus past: Nexus 5 vs Nexus 4 vs Galaxy Nexus vs Nexus S vs Nexus One (video)