It's here!!!
http://www.autoblog.com/2013/01/14/2014-jeep-grand-cherokee-gets-surprisingly-comprehensive-update/
"The new look and features are all well and good, but the main event here is a comprehensively updated powertrain menu, including the aforementioned alt-fuel option, a 3.0-liter EcoDiesel V6 that Chrysler expects will deliver 240 horsepower and 420 pound-feet of torque. Owners can expect 21 miles per gallon in the city and 30 on the highway, and the model features a 7,400-pound tow rating to go with its leg-crossing cruising range of up to 730 miles on a single tank."
http://www.autoblog.com/2013/01/14/2014-jeep-grand-cherokee-gets-surprisingly-comprehensive-update/
"The new look and features are all well and good, but the main event here is a comprehensively updated powertrain menu, including the aforementioned alt-fuel option, a 3.0-liter EcoDiesel V6 that Chrysler expects will deliver 240 horsepower and 420 pound-feet of torque. Owners can expect 21 miles per gallon in the city and 30 on the highway, and the model features a 7,400-pound tow rating to go with its leg-crossing cruising range of up to 730 miles on a single tank."