Saw one on a trailer last week in Estevan. It wasn't an ag tractor though. Some type of industrial tractor painted yellow and black with John Deere written on it. But was an articulated unit with a quad track arrangement. Looked like and oversized skidder but smaller than a 4wd ag tractor. So, they are producing something already that is similar to an Ag quad track therefore may not be too much of a stretch to say they will be making one soon. Perhaps it is on the John Deere industrial website.