Here is a response from the product development. They could have announced this months ago but they are just letting developers figure out reading the fine print.
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Starting April 25 2023, Apple only accepts App Store submissions built with XCode 14.1, requiring the iOS 16 SDK. C++Builder 11.3 supports building iOS applications with the iOS 15 SDK, but does not support the iOS 16 SDK. We have no immediate plans to add support for this SDK version.
C++Builder remains capable of targeting the iOS 15 SDK, including distribution of apps through private Ad-Hoc Deployment.
Embarcadero remains committed to C++Builder and RAD Studio, and is focusing on providing you with a high-quality Windows toolchain. You can read more about our exciting C++ plans for the future in our product manager’s recent blog post.
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