Metro Style Interface
Office 2013 has redesigned its interface with Metro Style, which is a simpler and cleaner layout than Office 2010.
New Backstage Interface
The layout of Backstage (File Tab) Office 2013 has been redesigned. You can easily create new files, save files and manage your document information etc.
Office 2013 and Office 2010 Save as Interface
New Save As Interface
The Save As interface is changed in Office 2013. It helps you to save the files in your frequently files saving location quickly.