About a month ago Google has released an optimized starting page for iPhone users.
A couple of days ago we have seen a new iGoogle single-column interface especially for iPhone.
Today, which is the first day of Macworld 2008, a new Google Mobile interface has come to the surface.
The new pages are loading faster, and Google Apps, Reader etc. have a new user interface.
Try it on your iPhone: http://www.google.com/m