Facebook changes its policies every year for betterment and security of their Users and Always give main importance to Public Privacy. Now Facebook is making more strong Privacy of their users by updating terms, data policy, cookies policy and adding new features to them.
you would select audience for your posts and hide from anyone, Facebook is also making FAQ about basic Privacy and basic use of FB like Untagging a Photo, Unfriend a friend, Block a friend etc So people can be much aware of Facebook and solve their Problems.
Business Advertisers will also get benefit from new Setting. FB is going to give you more control on your ads So you can control your ads according to your will.
For Complete Facebook Privacy plan of 2015 you can visit here