You may notice a slight change to how Facebook looks on your mobile device today. A little upgrade has been pushed to the mobile web versions of Facebook that vastly increases the size of posted pictures and all news feed items.
As you can probably tell from the picture to the right, pictures are about three times their normal size in the new update. Multiple photos will be place in a grid format as opposed to being side by side. Facebook has also adjusted the size of news feed posts by expanding them to the edge of the screen.
You can see if the update has made its way to you by checking Facebook on your mobile device of choice.