Two reports below indicate the recall is for models sold from Nov 2014 to Oct 2016, a two year period, and is comprised of 1,529 bikes. That's about 765 bikes sold per year, worldwide. At least for Trek, touring models represent a very small market (as we know).

Trek issues recall for 720 touring bike and wheels | Bicycle Business | BikeBiz

https://www.consumeraffairs.com/news...es-011917.html