Apple Removes iCloud Keychain from iOS 7 GM
Apple has removed iCloud Keychain as a launch feature of iOS 7. The company recently updated its iOS 7 What's New page to reflect the change.
iCloud Keychain. Coming soon
Lots of things you do on the web require passwords. Now iCloud can remember your account names, passwords, and credit card numbers for you. And Safari will enter them automatically whenever you need to sign in to a site or shop online. It works on all your approved iOS 7 devices and Mac computers running OS X Mavericks. And with 256-bit AES encryption, it’s highly secure.
It's expected that iCloud Keychain will added back to iOS 7 in an update that could coincide with the release of OS X Mavericks.