I have a newer Kernal rev 3.4.0-1125940, dated Mar 25 2014
iirc, it was a small update and did not alter the 4.4.2 rev number
(from ATT):
"Effective March 24, 2014, a software update for the Samsung Galaxy S 4 running Android 4.4.2 will be available to AT&T customers. This update contains an enhancement for customers using the premium version of the Lookout application and is 19MB in size. Customers who are running Android 4.3 will be updated to 4.4.2 and the download size will 421MB. Customers who are running Android 4.2 will be updated to Android 4.4.2 and the download size will be 850MB. The update is available to download over Wi-Fi only."