Sprint has announced on their website that starting 4/14/2014 Google will start rolling out Android version 4.4.3 to Nexus 5 devices. It can take up until 4/21/2014 for the roll out to complete and until 4/28/2014 to reach all devices. So within the next 2 weeks we should all be happily enjoying this update. This update includes the Spark update for Sprint and Misc. bug fixes.
Edit** So Sprint pulled down the original post because they said a bug was found by Google. Now we wait...........
Sent from my Nexus 5 using Tapatalk
So in order to keep the forums clean of 101 threads relating to the 4.4.3 update, this will become your temp home for all 4.4.3 talk, OTA's e.t.c, any other threads will be closed.