This news broke right after last weeks issue and I thought it was important to address this week. The information you get from recording the screen or things like heat maps on web pages is really helpful in tracking down bugs and seeing what users are doing in your app. Maybe users aren't interacting with an app the way you thought they were. You can watch exactly what they're doing (that's the kinda creepy part), and streamline your UX or discover just how to reproduce a bug.
However, this information comes at the price of the user's privacy. I think Apple is being fair that you have to disclose this kind of thing. The problem for developers is when you disclose something like that, you risk the chance of turning off a large chunk of users. This is especially troubling for smaller developers. I personally would recommend it's not worth it, but if you feel the need to, make sure you are entirely up front.
Apple is telling developers to disclose secret screen recordings or face ‘immediate action’ by Nick Statt
With Swift 5, Swift's ABI has become stable. In this post, Instabug talks about what that means to developers. You can also check out the original post from the Swift team here.
Up until Swift 5, the lack of ABI stability meant that to be able to use Swift in your app it was necessary to ship the Swift runtime libraries with the app bundle. This added around 5 MB to the size of your app.
Swift 5 Module Stability Workaround for Binary Frameworks by Instabug