It's not uncommon to have bikes that were built years before, being sold as new. The problem with selling bikes in the US is our market is fickle. Young 'immortals' buy ****** rockets, and the survivors buy cruisers, and the transition is mush.
A classic example was the beautiful Honda Pacific Coast PC-800 - advertised as "The motorcycle that wants to be a car" - with it's trunk, shaft drive, hydraulic lifters, full fairing. Manufacturing was started in 1989, and stopped the following year, with thousands of bikes going into warehouses, and sold over the next several years. The same thing happened with the second production run.
I once purchased an Aprilia new four years after it was made -- same story.