There are a few good months before we see the first official preview of iOS 12, but that does not prevent designers from designing more interesting concepts.
An iOS concept 12 that caught our attention these days, redesigns the iOS Music application. The concept brings the much expected Dark Fashion which was requested by thousands of iPhone and iPad owners, brings a minimalist interface but with a much more effective control for volume based on 3D Touch functions, playing songs from the playlist with a simple swipe and brings back CoverFlow.
Cover Flow was highly appreciated by users and many were disappointed by its withdrawal with the launch of iOS 8.4 in 2015. The new version imagined by Litaya, brings a Cover Flow in more vivid colors and fluid effects.
The concept does not look bad, but there is little chance that it will be considered by Apple. Over the years there have been concepts that have redesigned the iOS system in many ways, but very little has materialized on the iOS interface.
Regarding iOS 12 it's unlikely we'll see major interface changes in “Lock Screen","Home Screen” or in the applications Apple from iOS. iOS 12 will be focusmore on the correction of some current errors and bugs, performance and reliability.