SoundCloud updated its iOS client this morning, bringing the app to version 3.10.1. The company says the update "significantly upgrades the listening experience," bringing about more functionality for playlists, the ability to shuffle your Likes, and a new 'related tracks' feature.
With the new playlist capabilities, you can now shuffle and edit your playlist within the mobile app. When SoundCloud redesigned its iPhone app last summer, it removed these and several other features, and it has since been re-adding them through a series of iterative updates.