Google has announced that we will able to sync our Outlook calendar with the Google Calendar sync. Google has worked closely with different platforms and application and its calendar sync works with different mobile devices and applications like iCal, Iphone and IPad, Blackberry, Android, Nokia/Symbian, and Windows Mobile phones.
Google has confirmed that Outlook 2010 will have this facility. To use this facility you need to download and install download Google Calendar Sync version 0.9.3.6.
Settings window comes up where you need to enter your account’s email address and password, then you need to choose your sync option and then set sync frequency. That’s it. Google specified that even if you are currently running Google Calendar Sync, in order to use the Outlook sync you must download and install the new version.
You can read more with the official Google Guide: Guide Link