Snapchat has updated their app with a number of changes to the stories feed. The most notable improvement is the Playlist feature that allows users to create a playlist for of friends stories to watch. To add a friend's story to your personal playlist, tap the story thumbnail to the left of their name to obtain the option. For now, story playlists will have to be created everyday manually which hopefully will change in the near future. Peep more info on the latest Snapchat update here.
Source: The Verge