Twitter has announced a new interface change for mobile apps and for web. This will change how conversations look in your time line. This is Twitter’s attempt to make conversations stand out from normal tweets. Instead of showing a single tweet at a time, if it’s a conversation it would show the recent three tweets of the conversation with a line connecting them, making them look apart from other tweets. When tapped / clicked it would expand the tweet to show the full conversation.
https://www.youtube.com/watch?feature=player_embedded&v=BnRmayAuB4M