Here's everything that Facebook announced today: http://mashable.com/category/facebook/
For those wondering if Google+ will ever have similar features, some updates:
-Google Music is still in progress
- Google had trouble getting licensing agreements with the labels, but they're trying
-In social news
, Google is known to be working on a social news tablet app called "Propeller"
- Google+'s read API was just released, so we should see more apps integrating with it very soon.