The two terminals Nexus, the Nexus Two versions of the model in July 2013, the Nexus model in July 2012 and finally also a compatible update to Nexus 10. An update in the making for those terminals that have the approval of Google and available for everyone. Those who learn to use adb commands and want to install the OTA can do so through the following links.
Download Android 4.4.2 OTA
(2012 Wifi) 4.4 -> 4.4.2: KOT49H from KRT16S
(2013 Wifi) 4.4 -> 4.4.2: KOT49H from KRT16S
(2013 Wifi) 4.4.1 -> 4.4.2 KOT49H from KOT49E
(2013 LTE) 4.4 -> 4.4.2 KOT49H from KRT16S
4.4.1 -> 4.4.2 KOT49H from KOT49E