Does anyone have any information on why the introduction of the diesel in the 2014 Grand Cherokee has been delayed in the U.S.? Originally it was supposed to be March, then April, then May, then June. I went to a local dealership last week and they said the earliest they will get delivery is now October. I've written 2 letters to Jeep in the past 3 months, and their response is always vague. But they did confirm that their delivery goal is currently October. I'm curious if anyone else has any info?