For most NetSuite customers, the 2016.1 update is about 1 to 2 months away. If you don't frequent the NetSuite user group (https://usergroup.netsuite.com/users/index.php), you may be surprised to learn that some significant areas of functionality are being discontinued in favor of a new method. If you use NetSuite to send emails and automated or semi-automated fashion, you will need to be using the new system when you are upgraded to avoid problems. The only announcement of this change I could find is in this thread in the NetSuite User Group (https://usergroup.netsuite.com/users/forum/product-areas/sales-marketing-support-service/366985-use-of-crmsdk-tags-will-be-completely-deprecated-with-version-2015-release-2) (login required).