For starters, Xojo will need to update their iOS SDK to at least 16.1 and everyone will need to upgrade to continue development. They typically do this in the first release of the new year.
Apple don’t care about other languages than XCode when making marketing statements. The one you quoted probably won’t change anything in using Xojo for iOS building.
Ok, so this is probably exposing my ignorance of how Xojo works, but does Xojo actually use Xcode to build iOS apps?
The reason I am asking is because I have already built a Xojo desktop app and I am now deciding on a platform to build the companion iOS app. I don’t want to invest energy into learning Xojo iOS if it’s gonna be deprecated by some Apple requirement to only use Xcode.
No. Xcode is required on the machine because of the tools that come with it, like Simulator, but it’s pretty reliable that every year Apple requires the latest SDK to build apps and that require a recent version of Xojo.
Xcode (or its command line tools) is used to build the Xojo framework and internal plugins for macOS and iOS.
And when the Xojo IDE links a program, it should use the latest SDK version.
We’ll let me put it another way then. This is one of those things that unless you are an engineer or ex-engineer, you don’t know how it works and should stop answering this topic as if you do.