
One of the neater things about Cortana is that the "look" of the personal assistant is dynamic, not built into the OS. This means that the page layout can be changed by Microsoft on the backend at any time. Going forward, Microsoft is still tinkering with how Cortana is organized, dead space and general layout based on user feedback.
The two images you see in this article reveal the subtle changes coming in Windows 10. You can see the Cortana icon is now center instead of to the upper left and some other minor adjustments.
Full story from the WindowsCentral blog...