This is about a month old, but it's the most recent news I could find on the Cruze Diesel. The last line of the article (at end of quote, below) is interesting:
More Chevy Cruze Diesel Details Emerge - chicagotribune.com
Ever wondered what a Cruze would look like if it had some more trunk space? Today, Chevrolet has revealed its Cruze station wagon before its official appearance next month at the 2012 Geneva Auto Show.
These pictures show the wagon with the same clean looks that the Cruze sedan and hatchback...