Logging into one of the older Twitter accounts in my possession, I noticed a slight visual upgrade to the user interface today. The tweet feed has been widened and the black/white overlays have been scrapped. The dark navigation bar has also been replaced by a thicker, white navigation bar. One other small change is the addition of header images to the sidebar when viewing your home feed. I’ve provided screenshots below for comparison’s sake. It appears TweetDeck underwent a similar visual upgrade as well, though having access to either new styles is hit-or-miss depending on the age of your accounts.