Apple released WebApps for iPhone, a library as well as a selection of Web-based applications available on Apple mobile phone. On the same page, visitors will find links towards the Web development guidelines and explanation for submitting your WebApp for iPhone.
Last but not least, Apple further communicates about the new "Works with iPhone" similarly to the current "Made for iPod".
This WebApp-dedicated pages (including the developer SDK) illustrate clearly that Apple does not intend to further open the iPhone to "native" applications, Cupertino probably wants to control the system layers, as well as non web-based application to avoid hacks to break its iPhone business plan, mostly based on exclusive partnerships with c
