Mike,
The Tyros2 has always been sold by MI dealers. I've said this before but perhaps you have not seen my post. It's not Yamaha that has not stocked the Tyros2 in some of the big chain store like GC and Sam ASH. It is the stores themselves. Many managers don't think they have a market for the more expensive arrangers or don't think their sales staff have the knowledge or ability to sell these and so they decide not to put them in particular stores within the chain.
You are correct about the G70 being sold by CK dealers rather than MI dealers, but you are not correct about when the divisions will change. Those CK dealers currently stocking the G70 will be able to purchase more until January 1 but MI dealers that are not in close location to another CK dealer can purchase the G70 currently. Again, it's not Roland's or Yamaha's decision which dealer can sell these models but rather the dealers choice.
George Kaye
Kaye's Music Scene
Reseda, California www.kayesmusicscene.com