Cult of Mac reports that it has been discovered via the iOS 6 beta 3 that you will no longer need to input your Apple ID password when you want to download a free app from the App Store. Cult of Mac first reported on the matter when iOS 6 beta 1 was released, when it discovered that users were no longer being prompted to enter their password when downloading updates of games or apps they already owned, or re-downloading previous purchases. Now it looks like this has been extended to the downloading of free apps, which makes a lot of sense really. I’m sure we’ve all wondered why we were having to bother to enter our password when downloading a free app in the past, well now we won’t have to, assuming Apple keeps this new feature in the final gold master version of iOS 6.
Source: New In iOS 6: App Store Doesn’t Require A Password To Download Free Apps | Cult of Mac