did you actually get the update? i saw on sprints device support page that it says that KTU84M has been out since 5/2/14, i think they messed up and it was supposed to say 6/2/14. anyways i hope everything works well. Did it enable that stupid spark icon like all the other phones have?
Nexus 5 updates never come from sprint. Nexus devices are unlocked and controlled by Google. So don't expect the Walmart look alike icon neither. Its the beauty of stock Android.