Hacker News Reader

But it's not necessarily because they use the old SDK that they are broken. And there have been betas available for some time

There are changes between each beta. There are also changes between the beta and GM.

Sure, but do those changes actually cause any apps compiled with the iOS 13 SDK to look or behave significantly differently on the beta vs the GM?

Betas being available doesn’t solve the problem because you can’t submit updates compiled using beta versions.

Right, but the point is you can use the beta to validate that your app, compiled with the old SDK, still functions normally on the new OS