You can now set custom event reminders, including multiple reminders for a single event. Reminders can be delivered over email, SMS or with web pop-ups. Google Calendar also now allows you to export all your events in the .ics calendar standard format.

Editions impacted:
Standard, Premier, Education, Team and Partner Editions

Languages impacted:
US English

How to access what's new:
To set event reminders, open the details of an event, customize the reminder settings, and click 'Save'.

To export your calendar data, click 'Settings', choose the 'Calendars' tab, and click 'Export My Calendars' to create a zip file with your calendar information.

For more information:
http://www.google.com/support/calendar/bin/answer.py?hl=en&answer=37242
http://www.google.com/support/calendar/bin/answer.py?hl=en&answer=37111