One of the powerful features of Windows 10 is Cortana, the personal digital assistant of Windows 10. Cortana helps users everywhere—from search to Edge. While Cortana is a very handy tool for users, Microsoft has always tried to improve it—performance and feature-wise—so that users can use it more efficiently.
The User Interface of Cortana has been improved greatly since build 10240, and the current one looks like this:
Now with the Anniversary update, the software giant introduced a new UI, that allowed you to shortlist your search within local files, web results and applications.
Now moving forward, a new UI of Cortana is being revolving around the Internet, that might be introduced with Redstone 2. According to MSPoweruser, the change is affecting only a small number of people and according to that the search bar is moved to the top. Other visible changes are also found pertaining to displaying elements along with a new major change.

The text box, normally grey or matching the set accent color, can be set to correspond with a rather light theme – changing the background of the box to white.

A floating cortana might also be available, but we would look forward to upcoming windows 10 builds as Redstone 2 is around the corner.