18B was on the 8/1/14 order guide. The guide implied it was just added:
LATEST ORDER GUIDE UPDATES
● Removed the following items which have been moved to
Job 2
— Dual Sliding Doors
— Lane Keeping Alert with Driver Alert (41C)
— MyFord Touch® (584)
— Fixed Rear-Door Glass with Flip-Open Driver and
Passenger Side Door Glass (17E)
— Fixed Rear-Door Glass with Fixed Driver and Passenger
Side Door Glass (17D)
— Vehicle Personalization – Carpeted Cargo Floor Mat
(85B)
— Vehicle Personalization – Spray-In Cargo Floor Liner
(61G)
— Vehicle Personalization – Back Up Alarm (43B)
● Updated GVWR for Transit-350 Medium/High Roof Wagons
for Gas and Diesel Engine.
● Removed Speed Limitaion-77MPH (52U)
● Added Autolamp with Rain-Sensing Wipers (18B)