From July 2015, Twitter Direct Messages or DM’s as they are popularly called will no longer be restricted to 140 characters. Unfortunately though, tweets will still be limited to 140 characters as it is one of Twitter’s unique features.
It will however be tested for some weeks before complete application. This limit removal will eliminate the need for many messages in one conversation. Twitter has been facing stiff competition from rivals such as Facebook, Instagram, Snapchat, etc. and has also witnessed stock price decline since its public listing on the New York Stock Exchange.