Twitter Removes 140 Character Limits In Direct Messages.

https://twitter.com/twitter/status/631513207882907648

Direct messages on Twitter can now go on-and-on in a single message. This change will not affect the public tweets, as the 140 character limit stays the same.

Twitter has began “rolling out this change today across our Android and iOS apps, on twitter.com,TweetDeck, and Twitter for Mac”