Taken from the official google reader’s blog:
To make our (and your) Reader iPhone experience better, we wanted to really take advantage of the iPhone’s capabilities. Today we’re releasing a new beta version of Reader designed for the iPhone and other mobile phones with advanced browsers. You can use it by visiting http://www.google.com/reader/i/ on your phone.
New iPhone Can Decouple From AT&T, for a Price
full article at
http://www.washingtonpost.com/wp-dyn/content/article/2008/07/01/AR2008070101048.html?hpid=sec-tech