I was at my Honda dealer for service last week and got ahold of the memo that came from Honda saying only 06 model year CRV is towable and all other 06 models are not. All the 05's are towable (except Hybrids) according to the memo. I am not aware of any changes to the drive line. My guess is they had some failures and are limiting their liablity. I tow a 91 Accord and a 2003 CRV and have towed our 2000 CRV and never a problem. I just make sure and go thru the steps Honda requires.
Joe in Seattle; winter: Motorcoach CC, Indio, CA
2015 Essex 4503
2010 Honda CRV toad