Samsung isn't making it easy for developers. The company may have released a handful of SDKs for its latest devices, but Samsung's non-committal approach to its Tizen platform is probably going to cost it developer support.
Google recently announced that it will soon release a developer preview of Android 7.1 Nougat. The refreshed platform from Google carries over some of the fancy features from the recently-announced Pixel phones to Nexus handsets and other devices. As always, new APIs abound and require app updates.