Instagram’s new feature
According to the Instagram, this “You’re All Caught Up” message is to help users keep track of posts they have seen since they have killed the chronological feed. This is simply a message that shows up when you’ve seen every post from the last two days. With this message, you’ll have a better understanding of your Feed and know you haven’t missed recent photos or videos. You’ll find posts that you’ve already viewed as well as posts that are older than two days below the message.