Apple has pushed out an update to their iWork suite consisting of Pages, Numbers, and Keynote that not only bring support for iOS 6, but also add the ability to open your documents in another app. When you go to Share and Print, "Open in Another App" is now an option. You'll be able to choose between Apple's format (Pages, Numbers, Keynote), Microsoft's format (Word, Excel, Powerpoint), or PDF and the apps that support the chosen format will be available.