I saw one article that said the drive train is unchanged since 2009. It showed 92 hp on a Dyno (which is always lower than the factory rated hp of the engine.
for the 2010 model, Motorcyclist.com indicates 118 hp for the engine and 125 ft lbs of torque (forgot at what RPM). Just Google search Honda Goldwing horse power and you can check it out for your self.
2008 GL 1800
75 Norton 850 Commando