We can say officially that iPhones and iPod Touch are PDAs

Apple to Open iPhone Programming to Outsiders, there is a clear interest on developers to create new applications for the iPhone, as they are currently duing using installer.app. And there is already a huge numbers of Web 2.0 applications for the iPhone (in most of the cases works also in Safari)... Also curious is how people install in the iPod touch all the applications that apple has artificially removed from the iPhone.
The new SDK is a good thing that adds lot of value to these gadgets.