Knowledge Graph is now almost completely rolled out. More on: http://doughnutio.blogspot.com/2012/07/knowledge-graph-is-available-in-asia.html
Google I/O 2012 - Keynote Day 1.
No More Pirating Paid-apps on Google Play Store.
Paid apps are often re-packaged into apk files and distributed (for free) in the past. Supposedly starting now, Google Play Store will encrypt each app for each device before downloading. Less chances to pirate paid-apps. Good for developers!!!
Google Now knows what you are doing
Siri only replies when asked. Google Now can sense and based on history, Google Now knows your habit and get the information ready (without the need to ask verbally or using keywords). Android rocks!!!