The documentation says that if I want to support both portrait and landscape, I basically have two ways of doing that:

1. Set up the viewcontroller's view so that the subviews autoresize correctly and make smaller changes programmatically at runtime
2. If the changes are more substantial, create an alternative landscape interface and push/pop the alternative modal viewcontroller at runtime

I would like to present the info where the layout is substantially different, but logic is the same. Ideally, I would load another XIB for the same viewcontroller, but it does not seem to be an option.

Sounds like #2 is what I need to do, but my problem with that is that it sounds like it would use the standard modalviewcontroller animations that are nothing like the device rotation animation. (Of course, being the lazywebber that I am, I did not test this hypothesis.)

So, how do I load an alternative layout for landscape with the same viewcontroller but different XIB? Should I use the method #2 above and is the rotation animation natural? Or is there some other way?