This looks cool, but it isn’t working for me: Official Gmail Blog: Updates from Google Docs and Google Calendar
The Google Calendar team, along with the mobile team, released an upgrade to the Calendar interface on the iPhone. It is now tailored for the iPhone, and you can now see your different calendars in distinctive colors. You can see the new Calendar interface by going to http://calendar.google.com on your iPhone browser.
I keep getting redirected to the regular mobile experience.