Twitter Still Testing and Changing Profile Redesign

Twitter is still making tweaks to the profile redesign experiment it's testing among a small group of users, such as returning to a vertical timeline and making pictures even larger.

Last night, Mashable assistant features editor Matt Petronzio — who first spotted the major update to his Twitter profile page — noticed that the layout changed back to a single vertical stream. Previously in the test, various-sized cards showed up scattered across the page. But as of this morning, they are back to the way they are pictured in the screenshot below.