I have a question.
I don't expect we'll be able to use iOS apps in OS X as early as Lion, and I understand based on the different chip architecture, it shouldn't be able to run at all...
buuuuut,
I distinctly remember watching that first keynote when they made their dev program available, and walked us through the iPhone dev tools, and seeing an OS X On-screen emulator, that would let you code and test your apps as you wrote them right there in OS X, with a big clumsy dot for a "fingertip"...
If they'll run in that emulator, isn't it conceivable that in some way, your iOS apps would find a way, using that emulator layer, to look something like dashboard, to run in both environments?
I'm thinking, syncing the data between both mobile and desktop iOS apps would be simple enough to be done automatically, like dropbox for instance, or a basic itunes information sync... Then on your desktop or MBP, you'd have access to content you've created on your mobile device, for a seamless user experience. None of this "sent to itunes, download from itunes" nonsense, with verions all over the place to keep track of.
I imagine a macbook pro will come someday, with a standard vertical screen and basically an ipad for the horizontal keyboard area. Imagine the possibilities there, of integrating the two ecosystems... how could they NOT give that a try?
We're not there yet, obviously, but Lion seems like something of a step in that direction.