Windows 8 970 Published by

The official Facebook app for Windows 8 has been updated with some new features

From WP Central:
If you're an avid Facebook fan, you'll be pleased to learn that you are now able to download photos, as well as send them in messages. Another major improvement is the share charm support, enabling other Windows apps to share content with the social network.
  Facebook for Windows 8.1 updated with sharing options and more