For a new project with my current company i started with iPhone Sdk. I was skeptical in the first place how it will evolve and if it's not better to go rather in the direction of android since it has a wider range and is not so locked down. The Sdk confirmed quite a lot in the beginning. It's clumsy and not made for that kind of programming in the first place.
But now after 2 strong weeks with the Sdk, tons of frustration with the logic of a Mac and some fun with table views and tabbars, it's coming together.
And I must say I'm quite excited. I think for me it's a good step in a new direction. Extending the designing to interface design, and the programming to object orientated.
My first app will come to the app store in some weeks. We still have to work out some paper work. More about it hopefully soon.