IOS6 still prompting me for password

I guess its a bit late to be posting a thread about this, but one of my anticipated features of IOS 6 was that you weren't going to get prompted for your Apple ID password when downloading free apps or updates.
Its a minor gripe because I can still enter the password, its just theres no need to really enter the password for free apps or updates for apps you've already purchased.
Also wanted to let you guys know that I've tried once or twice before and have successfully downloaded updates without a password, it seems like sometimes it asks you for a password, sometimes it doesn't.
Can anyone explain it to me? Thanks