Twitter has been testing algorithmic updates since June 2015. What this basically means is the timeline will reorder tweets based on what Twitter’s algorithm thinks people most want to see, a departure from the current feed’s reverse chronological order.
It is unclear whether Twitter will force users to use the algorithmic feed, or it will merely be an option.
Personally I’ve seen twitter is already using this approach to show top tweets. This has been in action for a while. When you search for a #hashtag or by name what you see is “top” tweets and then you can switch between “live” or other media like “photos”. For example a search for #riptwitter showed the following, for top tweets once there are enough posts with the selected media [photos] the metro link pushed down and photos took priority spot.
Twitter has been having it’s own problems for the last 3 quarters. The user base is somewhat stalled around 320 million users.
I actually quite like this new feature as you can see what’s relevant and important to me based on my tweets, people I follow, re-tweets and shares from the other sites. Which is a great feature to have given the limited time available for everyone and the ever growing list of new social networks.
Twitter Map: By Fobos92 (Own work) [CC BY-SA 3.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons