If you're going to start a thread called "Warning about Sprint Update!!!" I think the first thing people should see is that
this OTA will Unroot your phone and there is a good possibility that you won't be able to root again.
Which means, if you like custom roms or you like Wifi tethering, don't do this update.
Use the rooted version
-->HERE<-- or just wait a day or so and there will be tons of info and better options from the devs.