[allsystemsgo]

But, that wouldn't make any sense to include UI components in a programming language. And I think the interest level is already "spiked".

[tyingq]

Okay. I was under the (perhaps not true) impression that the vast majority of swift apps were iphone apps, with the apple specific UI bindings. Such that one of the first questions on a new platform (Linux, Android, etc) would be "how do I create the UI?".

It sounds like instead, the cross platform appeal is that back end or background services can now be written on non-apple platforms?

[allsystemsgo]

That's correct. UIKit isn't like, baked into Swift. Whatever platform you're writing for would need to provide to you UI components and then some.