The upgrade to 280 characters will be first available to a small group of people, the company said, adding it will collect data and gather feedback until it is launched for all users.
Twitter rolled out the testing of its new feature, the 280-character limit, today.
The figure of 140 was chosen as it was similar to the old character limit for text messages, which has previously been removed.
Chris Sacca, an early investor in Twitter, argued the company was "distracted monkeying around with character counts" while they have bigger issues to take care of, such as meddling tweets that appear to have been sent from Russian Federation. For example, those who tweet in English may face this problem, but for Japanese users 140 characters are sufficient. But this time, the company has finally developed a character limit which will keep Twitter's unique identity of providing real-time nature while giving a little more space for people to express their thoughts easily. The average length of a tweet in Japanese is 15 characters compared to 34 characters for the average English tweet.
The company's move to double tweet limits from 140 to 280 characters was well received by investors.
The new beta version is expected to replace the previous amount of 140-character tweets when it scales through.
"Twitter is about brevity", she said. "It's what makes it such a great way to see what's happening", they wrote. "That is something we will never change".
Love 'em or hate 'em, tweets are about to get a whole lot longer.