Twitter Is Testing A Feature That Will Let You Go On Long Rants
Those who use Notes will be able to go beyond 280 characters and embed photos, videos, GIFs, and tweets. They can also publish Notes on and off Twitter and edit them both before and after publishing. Notes will be accessible on a tab in users’ profiles. Twitter is creating a handle called @TwitterWrite as well where they will post updates about Notes and other relevant features.

Notes is currently only available to a limited number of “writers” in the United States, Canada, United Kingdom, and Ghana. It is unclear if and when this feature will be available to other Twitter users. According to Twitter, Notes is part of their goal to not only create “things that writers need, [but] investing in the tools and the community that writers deserve.”
Notes seem to be part of Twitter’s larger plan to give users more control over their posts. It is currently testing an “edit” button that would permit users to edit their published posts. Twitter also recently created “Circles” that allow users to post Tweets to only a certain group of people. At the moment, the main question is whether or not Twitter users actually want to read long-form Notes and if Notes will satisfy their desire for more control. Only time will tell if Notes truly catch on.
Sample of Twitter Notes courtesy of Twitter.