This is info that is several months old. Yanmar and MTD, the parent of Cub, formed a new company to distribute compacts built by Yanmar and marketed as Cub by Yanmar. The trade name "C.U.T. Supply Company LLC" is registered in Ohio, as a Delaware corporation. It likely means absolutely nothing new for the grey market.
Yanmar never left the US....they simply quit selling compact tractors here. As a business entity they still won't be selling compact tractors here.
I'm still wondering why they chose Cub, whose once solid reputation has declined steadily and rapidly in the tractor market over the last decade, as a marketing partner.