It's beginning to look as though the iPhone SDK may not ship this month since Apple has been silent about it. It was supposed to ship by the end of February. Of course this doesn't really have any impact on Run BASIC since it will not use the SDK, but it will produce apps that run in the iPhone's Safari web browser.
We haven't talked much about our plans for iPhone support in Run BASIC. We should have more to say in the next month or so.