Press the arrows to navigate between posts. If the arrow is white, there are more posts to navigate that direction; if it is grey, you have reached the end. This will follow the same system as Scratchmaster's: If I re-heart the post, there is a new update.
This is heavily inspired by Scratchmaster295's updates project, and I think this would be a great way to connect better with my followers. Because of the limited number of characters on profile pages, this will be a lot easier to share my updates to you.