Apple is already working on the next iteration of its iOS mobile operating system, and while we've heard that it will offer a total redesign we still don't know a whole lot about new features. One analyst, Katy Huberty with Morgan Stanley, recently provided a bit of insight as to what we can expect.

Huberty believes Apple will unveil a "killer app" that takes the form of a mobile wallet. The company doesn't yet offer a system for mobile payments, but it does have the foundation in place. The Passbook feature, unveiled last year, allows you to store boarding passes, a Starbucks card, movie tickets and more in a digital wallet-like application.

Huberty didn't detail how the mobile wallet will work, but we presume it will take advantage of NFC. The industry has been slow to adopt mobile NFC-based payments in the U.S., however. Google Wallet has largely been viewed as a failure, but Verizon, T-Mobile and AT&T are working on a new solution called ISIS that could have potential.