As part of its WWDC Keynote Address this morning, Apple gave an update on the state of iOS. Through the end of March, Apple had sold 365 million iOS devices, 80% of which are running iOS 5. Push Notifications has seen widespread adoption, with 84 of the top 100 social apps using the service. 7 billion notifications are now sent per day, and over 1.5 trillion have been sent thus far. Game Center has also been adopted by many, with over 130 million Game Center accounts registered, 5 billion scores being posted every week, and adoption in 67 of the top 100 games. Finally, the Twitter integration in iOS 5 has led to 10 billion tweets sent from iOS 5 devices; iOS 5 devices now account for 47% of all images uploaded to the service.