I do not believe there is any documentation on the update, I believe it was a Day 1 update to bring all the phones to the current version. I checked for the update about 10mins after I got the phone on release day and accepted it. Other than a weird battery status bug I had today my Turbo has been rock solid.
I figured that it would take it without checking or needing approval. Upon start up.... So this was the first I checked... I got it now!!! Maybe this will fix my battery drain.... Lol