If you're looking to post multiple photos to Instagram at once, you have to employ another app to create a grid of snapshots. Well, that's about to change... for brands. The filter-driven app announced today that "carousel ads" will soon appear in your feed, allowing companies to post multiple images with "more flexibility" in the storytelling. When you encounter one of the new adverts, swiping left will reveal additional images, linking out to the appropriate website for further investigation. Underneath the post, dots will show your which photo you're viewing, and that handy link comes in the form of a "learn more" button. Of course, advertisers can also leverage the app's video abilities to drive the intended message home. Use of the new ad format will be limited at first, as Instagram plans to make some tweaks once they go live in the "coming weeks."