There was some rumors about the update being placed on hold until some issues were worked out.
I'm most definitely NOT a VZW employee. If a post answered your question, please mark it as the answer.
I'd try a cold reboot - completely off.
If that doesn't work, then try connecting it to a computer. Sometimes you can run the update via a computer download instead.
And FWIW, I thought the update hold-up is over, and that it's rolled out definitively.