Instagram rolled out horizontal feed test to public users on accident

Many Instagram users were surprised today when their Explore feeds were scrolling in a new horizontal layout instead of vertically without any prior warning. As it turns out, this was not intentional.

A test of a new layout, which utilized a lot of the design language of Instagram's relatively recent Stories feature, was only meant to be just that: A test that wasn't for any sort of public distribution. However, somewhere along the line, this test was rolled out to several users.

The head of Instagram posted on Twitter earlier today about the occurrence, asking any users still experiencing the experimental layout to restart the app in order to get their feeds back to normal.

As of now, no formal announcement has been made about plans concerning the formal rollout of the new Explore feed layout by Instagram or its staff.

Further coverage: Engadget TechCrunch The Verge