Shortly after iOS 6 beta 1 made its debut in early June, Cult of Mac reported that users are no longer required to enter their iTunes password when downloading updates or previous purchases from the App Store. In iOS 6 beta 3, Apple has expanded this feature to cover free apps, too.
In the latest release, users no longer need to enter their password to download free apps — regardless of whether they’ve owned them before or not.
This means that in iOS 6, the only time you’ll need to enter your password in the App Store is to download a paid app. Isn’t that handy?
Source: Reddit