all the updates rollout in waves, due to network overload if everyone will go and update their phones at the same time. You should get it within this days.
for the original S4, they said it should finnish on 3-9-14 if you don't get it until the 9th, then you can worry about it. There are some other ways of trying to get it, but i think you should just wait.
Another user in this post provided you with some useful information. Please let us know if you have any other questions.
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