Actually even the X3100 has 7.2 preouts. So now I think chances are good that ADTG could be right, that the 3200 and up will have multi-channel preouts. That would be really welcoming news because in the past if we want MC pre outs we would have to choose from the top 2 models (except for the Europeans who could go one model lower). Now more than likely we will have 4, or 6 this year if you include the 3100 and 4100 to choose from.
I don't have an official picture of the X3200 yet, but I found this pic of the X3200 on the web.
Looks like it has 7.2 pre-outs like the X3100. So I think the X3200, X4200, X6200, & X7200 have MCH pre-outs.
But only the X4200, X6200, & X7200 have XT32.