I'm currently on the August update which to be honest it was a pretty hefty file size in its own !
My Note 20 Ultra 5G is an imported phone from Samsung Hong Kong to the UK as I wanted the Snapdragon version so I know my updates may be a little later than usual.
It would be nice if Samsung was a little more forthcoming in their description of the update to advice what the new features are that have been introduced but I think the problem with that is some phone's may not be able to run a certain new feature so wouldn't get that part of the update and could confuse the owner !
Current Phone > Samsung Z Fold³ 5G.
The AUHD update is for the Android Security patch for 01 September.
Check out the following link for more information...