Apple's iPhone page
www.apple.com/iphone

Apple's App Store (iTunes Preview)
http://itunes.apple.com/us/genre/ios/id36?mt=8

Apple's iCloud Service
www.apple.com/iCloud (coming fall 2011!)

News and Blogs about iPhone
Macworld's iPhone Central
iPhone Matters
iPhone-Updates
iPhone FAQ News and Tips
AppAdvice
Into iPhone

Web Applications designed for iPhone
Apple's list of web applications for iPhone and iPod Touch
Leaflets (a collection of web applications designed for EDGE)
AccuWeather iPhone Weather Widget
Weather Underground
iConvert unit conversion
Movie Showtimes