News Feed highlights what's happening in your social circles on Facebook. It updates a personalized list of news stories throughout the day, so you'll know when Mark adds Britney Spears to his Favorites or when your crush is single again. Now, whenever... you log in, you'll get the latest headlines generated by the activity of your friends and social groups.
Mini-Feed is similar, except that it centers around one person. Each person's Mini-Feed shows what has changed recently in their profile and what content (notes, photos, etc.) they've added. Check out your own Mini-Feed; if there are any stories you don't like, you can remove them from your profile.
News Feed and Mini-Feed are a different way of looking at the news about your friends, but they do not give out any information that wasn't already visible. Your privacy settings remain the same – the people who couldn't see your info before still can't see it now.
These features are not only different from anything we've had on Facebook before, but they're quite unlike anything you can find on the web. We hope these changes help you stay more up to date on your friends' lives.
Ruchi Sanghvi is the product manager for Feed.