Excel version 2013 was released in early 2013 and requires Windows 7 or later. Companies and individuals usually take their time before moving up to the new release.
Now that it's years later, most users are still with versions 2007 or 2010. However, it's useful to know what the significant new features are with this upgraded version.
PCWorld magazine has a very good article on those new features.
Click here to view the document.