37MB file enables full compatibility with Verizon's LTE network, still Android 4.4.2
Your LTE-equipped Nexus 7 should be seeing an update today that adds "Full compatibility with Verizon's 4G LTE network" — though plenty of people are using it with no issues and no update. Build KVT49L is just 37MB, and doesn't show us anything new or exciting, but we'll take any update we can get, right?
It's worth noting that this is the same compatibility certification that Verizon told us was coming "soon" back in September of last year. We're not going to pretend that we know all the details, but we do know plenty of folks who found work-arounds and have been using their LTE Nexus 7 on Verizon for quite a while.