As Spotify users around the world  await the return  of their good old fashioned app icon, the company is rolling out four improvements to the platform’s core music experience. Playlist folders on mobile and queue control First, Spotify is bringing playlist folders to the iPhone and Android app for the first time. This popular feature was previously only available on Spotify’s desktop app. The company says playlist folders on mobile is available for all users globally. Next, Spotify is giving users more control over playlists and the queue. “For those with carefully crafted playlists, you can now use in-playlist bulk actions to edit and reorganize multiple tracks, books, or podcast episodes at the same time—saving you time and taps,” Spotify says. This improvement is rolling out globally. Premium subscribers will be able to “select and manage multiple songs in your play queue at once” as well, the company says . This is a feature previously offered but removed at some point.…