2011 has certainly been the year of the iPad, here at OneSpring it appears almost every project has some sort of deliverable or sub-task pertaining to an interface for the iPad. Here is a article written by Greg Nudelman on storyboarding iPad transitions.
http://boxesandarrows.com/view/storyboarding-ipad
For those of you using iRise check out our iPhone and iPad SimDK allowing you to expedite your iPad visualization efforts.
http://onespring.net/blog/iphone-ipad-simdk-for-irise/