See this page
www.Krpano.com/iphone
The possibilities compared to Flash are limited. It's only possible to use cubical pano images.
A triangle based 3D rendering, which would allow things like Fisheye / 'Little Planet' projections, spherical / cylindrical and partial panos is not possible with the CSS 3D transforms. Maybe there will be more possibilities in future when some real 3D graphics APIs (like WebGL) become available.