Facebook is known to run experiments around site layouts, designs and functionalities with limited users – and we might have just captured a screenshot of one of these tests in action!

A user in Australia has sent a screen-grab of their own profile after they spotted an entirely new button on their profile.

The button appeared on his profile view here… Does it appear on yours?

Out of curiosity, he hit the “Grid View” option, and here’s what happened to his profile…

Facebook will often “roll out” an experimental design or function among groups as small as just 10,000 users at random, and will track users responses and actions around these new features.

What do you think, do you like the new layout? Let us know in the comments below…