I found this link:
http://www.buildinghomes.ca/community/forums/archive/index.php/t-12595.html
for new house, one upgrade option: Reinforced Capped light outlet.
It includes:
-Ceilings are increased from 40 to R50
-Vaults are increased from R28 to R40
-Main walls are increased from R19 to R22
-Exposed flooring is increased from R27 to R31
-Ducts are all sealed
-Simplified HRV or Dedicated HRV
-and others