iPad slidable panel control like twitter

What would be the mechanism behind twitter iPad application? I feel its having split viewcontroller, viewcontrollers with animation and gesture controls, or there may be scrollviews for endless scrolling. How can I develop same UI for my application?

Hey, here our is a demo project which is inspired by Twitter-ipad app

http://www.raweng.com/blog/stack-scroll-view/

its source code is opensource on githib (link posted in above blog).

hope that help u to understand the concept behind it !!

Matt Gammell ... He did a draggable split view. Its the closest i can think of may be configurable to emulate that http://github.com/mattgemmell/MGSplitViewController