Apple has been improving their user interface and user experience on the iOS and we shall be seeing some changes on the next iOS release.
From the screen shot above we can see an iPad-like multitasking interface where 4 applications can be show at once. You can even scroll between apps just like the existing apps menu.
In the meantime, Apple is considering to offers third party music streaming services such as Spotify for HomePod smart speakers. Currently the HomePods can only used to stream music from Apple Music.
And according to Apple regulations, Developer shall user the WebKit based web browser on App Store. Despite there are tons of email clients available on App Stores, the default drafting and email management will still goes towards Apple preloaded Mail app.
More details will be revealed as the development progresses.