With the new iOS 7 the new "navigationWindow" API has been introduced for handling the navigation logic for iOS 7.
Using a classic Titanium project, the sample code would be:
navigationWindow is supposed to be the top-level container (is a Window proxy, not a View).
Is going to work as alternative Ti.UI.iPhone.NavigationGroup (which is going to be deprecated)
Should also work if used in Ti.UI.iPad.SplitWindow.
I think the expected behavior is to be able to use it pretty much in this way:
Then I guess that windows could be added or removed from the navigationWindow using something like:
Attached you can find also an Alloy sample code using the navigationWindow element defined in the index controller instead of in the .xml markup