https://wccftech.com/download-ios-16-beta-wallpaper/

The new iOS 16 and iPadOS 16 beta is now available for download and so is the new wallpaper that comes with it.

At this point it is simply a fact of life that Apple is going to ship a new wallpaper with every new iOS or iPadOS release. This year is no different and you can experience the new wallpaper by simply downloading the new betas onto your devices.