The Carousel Format that was earlier available only for Link Ads and Dynamic Product Ads has now been extended to Mobile App Install and Engagement ads. Carousel ads are available in Power editor and through Facebook Marketing partners as well as the API.
Facebook has also rolled out the Desktop Video App ads that were earlier in Beta, with Power editor, Ads Create Tool, API and Facebook Marketing partners enabled for the use of Desktop Video App creative.
In addition to providing a greater creative landscape, the Video App ads, provide advertisers a new way to promote their apps with compelling Call-To-Action buttons. One of the advertisers “Be A Football Manager used desktop app engagement ads and realized 300-400% ROI in their campaigns to bring back past payers”.

