What's new in iOS 5
According to iEatApples.com,
Apple mentioned 10 major features out of the 200 features they’ve claimed to have added in this latest version of iOS5.
The site has compiled a list of 165 of those changes, and will continue to add new ones as they are found.
From what I’ve seen thus far, the features which will most impact our app design will be Reminders, Twitter integration, and possibly iCloud.