Microsoft has released a new version of Office 2013 which is preview version or beta version. Download this office 2013 edition to your computer for the better user interface experience.
Changes Made to Office 2013 - PDF, UI and etc.,
Partially a new user interface experience in Microsoft office based on Metro UI instead of traditional user interface.Metro UI was initially implemented in Windows 8.
Too many third party software for creating PDF files. Microsoft office 2013 has build in PDF creator that lets you to create your own PDF file .
Online installation if you have good internet connection.