Numbah1,
My guess is they're referring to stock that's already in their inventory, which they own for the lower invoice. Incoming inventory will come with a higher dealer invoice, so there's no way the price increase won't be reflected in an increased sticker price. IMO, it's unethical for dealers to increase the MSRP of inventory they own for the lower dealer invoice, but it's not illegal, so I'm sure some dealers will try and get away with this. One thing you can count on: The inventory coming off the boat with a higher dealer invoice will have a higher MSRP.
Elton