I received an email from Apple:
We’re reaching out to let you know about upcoming changes to in-app purchase content hosting. In Xcode 13.3, we’ve removed the option to upload non-consumable in-app purchase assets for Apple to host. In addition, support for managing these assets in App Store Connect will be removed starting in April 2022.
Does this mean that Apple will no longer offer hosting non-consumable IAP content?
I'm not sure, as there is no indication of this on the App Store Connect help page: App Store Connect Help
(I have a lot of IAP content in my app which is hosted on the Apple server)