I feel like I need to link to this article because of the amount of coverage it got this week. I didn't find it as surprising as some did though!
It's been a very long time since the number of apps in the App Store mattered and I'd much rather have a (vastly) smaller number of great apps than millions of average ones. Even the data about non-native app frameworks being on the decline is not really painting a clear picture as there's no information about how non-native apps were detected. If this is purely the decline of web based frameworks like Cordova then I'm not surprised at all, but if it also includes things like Xamarin/React Native then the data is a bit more interesting. Still worth reading though!
UPDATE: This post has now been updated with more detail on how the native/non-native split was determined.