Twitter, a microblogging site, might be all set to roll out the edit button on september 21, as per a report. The social media platform has announced earlier in September that it has begun internally testing this new feature. Moreover, it shared its plan to gradually release the edit tweet button to Twitter Blue subscribers over the coming weeks. Twitter Blue is a subscription service which provides its members access to premium features like ad-free articles. This service at the moment is only available in Canada, Australia, New Zealand and the US.