I don't have any inside information (and yes, that photo is an MT unit). But since the Walthers page says that these new SW1200's are DCC-Ready and will accept a Digitrax DN126M2 decoder (same as the MT SW1500), I didn't think it was a big stretch to assume that these new SW1200 models will use the same MT-style internals. If that turns out to be incorrect (or the models never happen at all, which wouldn't surprise me), I'll amend my page.
-Mark
Sorry, Mark. I did not mean any negative implication. I was just surprised that when I checked your page immediately after finding out these were announced, you already had a reference up. Very much appreciate your site, I use it frequently.