Since we display articles in our promo images on the App Store, we should either provide license attribution for the images which are displayed, such as Photo in image 1: User X, CC BY-SA 4.0 or only use articles which have public domain images.
Current example
Should have attribution. By Nhobgood Nick Hobgood, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=5735935
We may be able to claim fair use, but I doubt it would fall within the scope of which the WMF board has allowed fair use to be used/claimed to further our mission.