Live Photo sharing is now a thing on Tumblr. If you've got a recent Apple smartphone you should now instantly be able to share your image with a bit of motion and audio to the social service.
That's a pretty handy feature, especailly when you consider how many GIFs are already shared on the Tumblr dashboard regularly. iPhone 6s and 6s Plus user also get an extra bit of functionality via 3D Tough. A long press on a live photo in the feed will play it for your personal enjoyment and you can long press on the app icon to search online without having to open the interface.
Some of the same features are available on older handsets, where you just have to long press instead. We're actually a bit confused as to how 3D Touch is sigificantly different to a long press - maybe it will diversify more as time goes on. Or more likely people will forget it was even a feature.
It seems Android users don't have these extras just yet, stay tuned for an update.