Twitter has been testing designs furiously all winter, including a tile-like format for tweets and a Facebook-style profile page on the web. But TNW has spotted an update in the Twitter app that brings the same profile look to mobile. Instead of having a centered profile picture, with a user bio hidden behind a left swipe, the new design features the profile picture against a white background on the left-hand side of the screen, with a cover photo scrunched up top, and bio information just below the profile picture.