Does Apple suggest that developers transition to arm64-only and drop support for arm64_32 devices? No — Apple Watch Series 9 and later, and Apple Watch Ultra 2 and later all support the arm64 architecture. There are many Apple Watch devices that run watchOS versions your app likely supports beyond that list, so you need to keep the arm64_32 architecture around for those devices. As noted in the announcement, you'll want to use the Standard Architectures build setting for your watchOS app, and that will automatically build the right set of supported architectures for your app, which will include arm64_32 as well as arm64. If we add support for both arm64_32 and arm64, the binary will almost certainly exceed the 75 MB app size limit, and potentially violate the size constraints for each architecture slice as well. What size constraints per architecture are you thinking of? The Maximum build file sizes documentation lists such a requirement for iOS apps in the iOS 7 and 8 time frame, but that isn't relevant for
Topic:
App Store Distribution & Marketing
SubTopic:
General