It seems that Facebook cannot stop from testing and adding new features, not only on Instagram but on its main platform as well!
As you read this, the company is actually testing a new feature, which of course is available only to few users, just like they did back in June when they rolled out a tweaked version of the Trending feature, called "What friends are talking about". Basically what it does is it collects posts from your friends in a special section of your News Feed and highlights how many comments the content received from other people. Now the actual goal of Facebook, as formally stated earlier this summer, is to prioritize posts from family and friends over content from brands. It is still unclear if this new module is related, though it does seem like a good way to encourage people to interact with one another more effectively. It piles updates into smaller chunks so you can see more on your screen - which essentially meaning more opportunities for you to comment on something without scrolling and scrolling and scrolling (it gets boring at some point). It seems getting friends, and users in general, to talk to one another is the number one mission for the company.