Huddle:huddle is basically a group chatting feature that Google+ is sporting.
Circle:circle is feature where you can put your people in different category.
Instant Upload:It is the feature which allows you to upload photos and share them with your friend in a new
Hangouts:Is a feature where you can video chat individually or with the entire circle.
Sparks: Is a feature that allows you to chose from your interest and add them.
Lets see how much Spark will it add.........till then enjoy Facebook.