This is the other thing that people say when we talk about Swift stability. "It's a work in progress." Apple certainly isn't giving this impression anymore.

1) Apple now has most code examples in Swift. 2) Most talks at WWDC are either in Swift only, or with ObjC as the alternative examples. 3) Swift was made available almost 3 years ago. 1.0 was released in Sept 2014. The Swift team was working on it for several years before that. This is now roughly 6 years that the team has been working on it. So when should we consider it stable? 10 years? Longer?

To release a new language, call it the future of iOS development, but also call it "unstable and beta" is a really poor way to treat your developers. I am then stuck between possibly starting a project with an entire deprecated development environment (ObjC), or one that's going to be changing every year forcing me to spend significant time upgrading and possibly introducing bugs.

It seems possible to have a language change and mature in a more sensible way than this, it's just harder and takes more work by the language maintainers. The easy way is just to break everything, which is what Swift is doing.