As of today, it's now possible to share slow-motion videos using Twitter's iPhone and iPad app, the micro-blogging service announced in a tweet. The feature has been enabled via a silent backend update so there's no need to update Twitter's iOS app.
The ability to upload and share slow-motion videos entails both footage captured in 120 frames per second on your iPhone 5s and higher frame-rate videos at 240 frames per second recorded on the iPhone 6 or iPhone 6 Plus.