It seems the price is $CDN 1.999 for the new 120mm. Weird that there is no mention of this lens on the Mamiya website.
That's the same exact price they list for the "old" 120 lens. Other than the post a few days ago, how do we know there really is a new 120 coming? I'm not saying there's not, but you know how rumors get started, and then get repeated. I do think, however, that having a separate page on Vistek's site, with a D in the name, is suggestive