Jacob Kastrenakes, writing for The Verge:
Tumblr’s iOS app now allows iPhone 6S users to add Live Photos to their posts, just as though they were adding any other photo. When someone on an iPhone comes across it in their feed, they’ll see the Live Photo icon in the corner, letting them know it can animate. Like in the iOS Photos app, iPhone 6S users can use 3D Touch to activate the hidden video and sound. If you’re on an older iPhone, you can still view Live Photos by pressing and holding on the image. Android users appear to be out of luck, however. Despite receiving an app update today, Tumblr on Android just displays Live Photos as a still image. Same thing on the web.
Arguably, Tumblr is the first major social app to integrate with Live Photos. Kind of odd that Twitter and Facebook weren’t ready with official support a few days after iOS 9.2 – especially because Facebook appears to be on a 12-hour update schedule for their iOS app.
I wonder if Twitter will natively support Live Photos or convert them to their GIF-like format, but with audio as well.