I have an iPad app that I would like to convert from a tab bar to the new side bar when in regular width environments. My issue is that depending on the selection of the tab I sometimes need a second level of navigation, similar to the tripleColumn setting. Today I am achieving this by putting UISplitViewController's inside my UITabBarController. Can I achieve similar results with the new sidebar APIs?
UISplitViewController support for switching between tripleColumn and doubleColumn modes
Have you had any luck here? I'm looking into this as well and from what I can tell, Apple does this very thing when switching between the List and Grid view in Notes.