The sunset date for v201209 of the AdWords API has been extended to July 22, 2013. This will provide you with additional migration time while you are exploring the newly launched Enhanced Campaigns functionality.

Calls made to this version after July 22, 2013 will fail. It is therefore important that you migrate to AdWords API v201302 if you want your applications to continue to run without interruption.

If you have any questions about the sunset or need help with migration, please contact us on the forum. You can also reach out to us on Google+ page.