Break Booster Failure... update
I am experiencing the same problem you all are describing. My appointment is tomorrow, so I called Jeep directly 877-426-5337 today and made sure my account was up to date and had it noted that I was calling about the power booster failure. The woman I spoke to did not seem to have any idea this was a problem. She gave me a case number and shared that if the part was still on back order to call again with the part number and Jeep would work to expedite the shipping of the part either from a dealer in the Northeast or directly from the manufacturer.
She also shared that if you replace the part and then a recall is issued, you are eligible for a refund.
I'm sure most of you have taken care of this, because it is an older thread, but perhaps it will help someone in the future!