This is the first update in more than a year. Twitter has neglected to add support for a number of its new features including Twitter video, GIF support, Twitter cards, Twitter music streaming, Improved quote tweets, Group direct messages, Quality mention filters, Blocking improvements.

The micro-blogging site Twitter had lifted the 140-character limit for its 300 million-plus users to send direct messages.

In a post on the official Twitter blog, Twitter product manager Sachin Agarwal wrote, "If you've checked your Direct Messages today, you may have noticed that something's missing: the limitation of 140 characters. You can now chat on (and on) in a single Direct Message, and likely still have some characters left over."

While Twitter is largely a public experience, Direct Messages let you have private conversations about the memes, news, movements, and events that unfold on Twitter.

"Each of the hundreds of millions of Tweets sent across Twitter every day is an opportunity for you to spark a conversation about what's happening in your world," he posted.

"That is why we have made a number of changes to Direct Messages over the last few months. Today's change is another big step towards making the private side of Twitter even more powerful and fun," Agarwal noted.