Comment by vladdanilov

Here's a side by side comparison of general UI http://i.imgur.com/bViZN6Z.png and dialog UI http://i.imgur.com/AlclEsk.png (by Marc Edwards), and a new welcoming screen http://blogs.adobe.com/richardcurtis/files/2015/12/Screen-Sh....

There are also some screenshots and videos in the official blog post http://blogs.adobe.com/photoshop/2015/11/photoshop-cc-2015-a....