Bookmarks is a feature that was added to the mobile version of Twitter earlier this year but has yet to make its way to the desktop. The Bookmarks option is designed to allow users to save tweets for later access.
Love to use Bookmarks and want it on web? Into scrolling through Explore to see what's happening?— Twitter (@Twitter) September 6, 2018
We are testing out a new Twitter for web, which a small number of people will see today. Love it? Missing something? Reply and tell us. Don't have the new experience? Stay tuned. pic.twitter.com/w4TiRrVFHU
The new desktop site also includes some refinements to the design, with details shared by Business Insider and TechCrunch. There are new toggles for activating Night Mode and Data Saver from the profile page, and Trending Now and profile sections have been relocated from one side of the page to the other for a cleaner two-column look. Twitter has also redesigned the tweet composing window.
According to Twitter, the design is a "limited test for now" and not everyone will see the revamped site. Those who are able to try out the site will see an opt-in popup and are able to go back to the "legacy" site at any time in the Settings options.