I posted the same thing on TC. The Twitter iPad app has become the defacto iPad UI. If Apple could, I think they would've made the stacked split pane view contr

I posted the same thing on TC. The Twitter iPad app has become the defacto iPad UI. If Apple could, I think they would've made the stacked split pane view controller part of UIKit. I don't know if Twitter has a patent on it, but it's effectively public domain given how many people are already using that UX paradigm. That said, I don't know if it's safe for Apple to absorb into UIKit.