If I know Mother Honda and Garmin, based on previous examples, the upgrade will not be backward compatible. It's something new that's intended to make you want a new Wing. If you could get the same thing on an older model, why would you upgrade. Part of the marketing strategy.. BUT, they may prove me wrong, which won't be the first time....
2009 GL1800 Silver Audio/Comfort
Faith is more than believing God can, it's knowing God will.
The government cannot give to anybody anything that the government does not take from somebody else.
The problem with socialism is you eventually run out of other peoples’ money… (Margaret Thatcher)