No I haven't I received the notification about 3 days ago but haven't taken lol. I'll do it today cuz that was my concern, was the radio update in it. If it wasn't it was of no use to me, didn't care about the remote diagnostic stuff, etc.
Tippy Tappin on Tapatalk with Sammy's S3
Previously to the update I installed the new radio from xda-developers site because of the signal issues. I was ready to get rid of it and go back to my Maxx. Luckily I stumbled on the updated radio that solved all the problems. Then the update came out and I could not upgrade to it because I had installed the new radio and that was making it fail. I reverted back to the original radio and then took the update and "voila" the new radio was in it. It should help you immensely