Twitter is apparently testing a new way of displaying multiple images in a tweet.
We’ve tested the feature on Twitter.com and the iOS app and found that both will upload in a mosaic format. Twitter confirmed to us that it is testing different multi-photo layouts, so your mosaics may not always look the same.
Working cats pic.twitter.com/ADJEWpCXov
— Roberto Baldwin (@strngwys) February 12, 2015
Hopefully, the test means the multi-photo format will soon support GIFs, Vines, and videos, or mixed media in one tweet.
The update appears to come after Twitter rolled out a new swipe gesture to dismiss lightbox photos yesterday.