Snapchat has unveiled Groups functionality today, letting you participate in threads with up to 16 friends at once. Groups can be created when sending a Snap or making a new Chat. Chats sent to a Group are deleted by default after 24 hours, while Snaps sent to a Group can be opened and replayed once by each recipient. If a Snap isn't opened, it will disappear after 24 hours, just like Chats. When your friends are in a Group Chat, you'll see their name at the bottom. If you tap on that you instantly start a one-on-one Chat, and can easily go back to the Group with one swipe. This is...
Source: http://www.gsmarena.com/snapchat_introduces_groups_for_up_to_16_people_builds_shazam_music_recognition_into_its_apps-news-22155.php