Linux Mint 17 is a long term support release which will be supported until 2019. It comes with updated software and brings refinements and many new features to make your desktop even more comfortable to use.

New features at a glance:

Update Manager
Drivers Manager
Login Screen
Language Settings
Software Sources
Welcome Screen
Cinnamon 2.2
System Improvements
Artwork Improvements
Main Components
LTS Strategy

For a complete overview and to see screenshots of the new features, visit: “What’s new in Linux Mint 17 Cinnamon“.

http://www.linuxmint.com/rel_qiana_cinnamon_whatsnew.php