All good on iPadOS Public beta 15.6 No problems with 3rd party apps the ones that I have, ExpressVPN works and all on demand streaming services; Netflix, You Tube, ABC iView (Aus.) SBS On demand (Aus) ect. all fine.
Apple Quick Notes is brilliant as are the new folder features of Notes except for the Tag Browser which is simply not there for me. Tags can be created and still be found by Search but no list in the Folder Sidebar.
Safari is good but the address/navigation bar does not appear at the bottom of the screen as predicted but that may just be for iOS.
I got my wish for the App Library on iPadOS which I really use in iOS now.
Split screen is now so easy to use and understand with the three dot preference buttons at top of screen I can see myself putting it to more use than before.
Maps, brilliant too. About time Apple created an app to rival Google Maps.
In short I like this update and I'm sure there is more to discover.