This excerpt taken from the SU 6-K filed Jul 26, 2007.
Anticipated Royalty Expense Based on Certain Assumptions
(1) During 2006, we exercised our option to transition our base operations in 2009 to the generic bitumen-based royalty regime.
The Government of Alberta is undertaking a review of Crown royalties and other revenues paid to government by industry. This review is scheduled for completion in late 2007. For a more complete discussion, please see page 29 of our 2006 Annual Report.