A story comes out of Gizmodo/iPhoneology that suggests that Apple may have had plans for other widgets built into the iPhone.
References to 4 unused Widget names in the iPhone's "LocalizedApplicationNames.strings" file raise some possibilities. These names are listed:
key: com.apple.widget.translation
string: Translator
key: com.apple.unitconverter
string: Converter
key: com.apple.widget.phonebook
string: Business
key: com.apple.mobile.radio
string: Radio
The "string" name refers to the name that would appear on the iPhone home screen. So the phonebook widget would presumably be a "Business" directory. Coincidentally, there had been unconfirmed rumors that AT&T's Yellowpages.com would find its way onto the iPhone as a new application.
These strings have been known for some time, and may simply represent some left-over widgets references from Mac OS X itself. Apple's Mac OS X Dashboard features Phone Book, Translator, and Unit Converter on the standard installation of Mac OS X. This, however, would not easily explain the mobile radio widget reference.
One area of potential confusion for readers is that Gizmodo and iPhoneology published a graphic of corresponding widget icons. These icons, however, are not actually found on the iPhone itself, but are just a compilation posted for illustrative purposes.
Apple has long suggested that new iPhone applications would be coming in the future, with hints that new Google applications would also be arriving for the iPhone.