Microsoft has published a list that describes what the future holds for several features that are currently integrated in Windows 10. Some of them will be removed with the Fall Creators Update, while others will be either deprecated (and removed in future releases), or no longer be in active development.
Many removed items are libraries, engines or modules that won’t directly affect end-users, but Microsoft will also make changes to some well known Windows features . E.g. the company will no longer install the 3D Builder app by default in Windows 10, users will have to install it from the Windows Store.
The company also writes that the Reader app and Reading List features will no longer be individual features, they will be integrated in Microsoft’s Edge browser. Outlook Express will be removed with the Fall Creators Update and the regular Paint app will no longer be in active development. Instead, Microsoft will focus on Paint 3D.
The entire list, including additional comments can be found on the Microsoft website.