Twitter has recently rolled out a new update introducing a new 'Section' tab in search. The update is rolled out for iOS Users in the US.
As of now, in the iOS app the search tab offers a vertically scrolling list regarding the trending topics. With the new update, users can horizontally move in order to view the top news and tweets.
Apart from this, twitter is also considering to add an edit functionality. Twitter is considering an edit button since quite some time but its release is yet not specific.
Edit function will basically enable users to fix any mistake they made quickly.