Twitter may soon let you follow feeds made by third-party services
For example, you might see a prompt for a Popular Videos timeline on the Home screen. If you tap on the “Add Timeline” button, Twitter will create a new tab next to your Home timeline button named “Popular Videos.”
Currently, there is no information on when we can expect Twitter to release the new Custom Timelines feature to all of us. There is also the possibility for Twitter to decide to make the third-party feeds exclusive to its subscription plan, Twitter Blue. But, as it is with these things, only time will tell.