4.4.2 is a new release so currently there is not a root method. As of my last reading there is some significant progress in finding a root method. This is definitely not an obscure phone model. Just a brand new update that developers are still working to root.

Sent from my SAMSUNG-SGH-I337 using XDA Premium 4 mobile app

AT&T I337 Galaxy S4
NB1 Kit Kat Firmware
Work around Rooted (Thanks to all who worked on that method)

Galaxy Tab 3 10.1 GT-P5210
WiFi Only
CAGrom Beta