Twitter has introduced a new feature for Twitter.com called Hovercards. These are simply little windows that pop up when you hover over any name on your timeline.
It’s important to note that a lot of people use Twitter through different applications and never even see Twitter’s actual site. It is nice to see that Twitter recognizes that people do still use Twitter.com.
Hovercards display information like name, profile pic, location, whether or not you follow them, verified user info, etc.