Instagram announced a new feature on 22 February 2017, where users will be able to upload multiple photos or videos to produce a "slideshow" item in their Instagram feeds. More information in this article by Refinery29, and also here from Instagram.
The feature looks like this (sourced from the Refinery29 article):
Schedugram supports these posts, although right now (22 Aug) we only support images in carousels (videos coming!).
To create a carousel post, upload an image through the 'upload media' page and then click the icon to create a carousel post:
You will then be able to upload up to 10 images (that's Instagram's maximum number) for your carousel, and you will see in upcoming posts that the post is a carousel post.
If you have any questions, don't hesitate to reach out to our team at [email protected]
This article may also be found with the keywords: multi image, multiple images, slideshow, gallery, carousel, multiple video, multi video.