If you are a developer who is developing a watchOS app, you might want to read this. Apple has just announced that by June 1, 2016 all new and old watchOS apps that are going to be submitted to the App Store need to work natively and should be built using the watchOS 2 SDK. By enforcing this change and making it mandatory for all new apps, Apple is trying to make the experience of using apps on the Watch better for the users. As non-native apps tend to work slow and take longer loading times than those that run on the Watch itself.
The developers have had enough time to make their apps native, as Apple released the ability to make native apps in watchOS 2 SDK, which was made available in June last year. The watchOS 2 was released publicly in September alongside iOS 9. The initial release of the watchOS did not allow developers to create native apps, that resulted in bad reviews from customers for the Apple Watch. Apple quickly realized the issue and added the ability to watchOS 2. Now it wants every new app to be native for the best experience possible.
Apple is expected to hold the WWDC 2016 in June, where it is going to announce watchOS 3 and iOS 10 among other things.