MacStories points to a change in the App Store guidelines, which now state that:
Apps designed to teach, develop, or test executable code may, in limited circumstances, download code provided that such code is not used for other purposes. Such apps must make the source code provided by the Application completely viewable and editable by the user.
On a related note, the first reviews of the new iPad Pro 10.5″ are hitting the web, and it looks like the best tablet got even better. I have to admit – combined with iOS 11’s many changes to make the iPad feel more like a real computer, I’m definitely intrigued.