If you don't need the trailer "right now", Moebius will be offering a 53ft Great Dane reefer trailer. I think it's scheduled for Spring 2012, give or take a little.
Hopefully, Revell/Monogram is just "testing the waters" with the 1/16 Peterbilt 359. Maybe if the Peterbilt sells well, we'll see the Kenworth W900 come back.