After testing the feature last September, Twitter is making the 280 character limit official, meaning you can tweet with more than 140 characters.
Here’s Twitter’s official announcement;
We're expanding the character limit! We want it to be easier and faster for everyone to express themselves.
More characters. More expression. More of what's happening.https://t.co/sjZ8phPGLE
— Twitter Philippines (@TwitterPH) November 7, 2017