Raptor4you said mid-month in another thread, so I am assuming it is accurate.
This is what Blue Oval has posted. The person that posts this info is a Ford dealer.
Posted 02 June 2018 - 02:43 AM
Per yesterday's FDNB (Fleet Distribution News Bulletin) here's the updated production timetable for the 2018/2019 Ford F-150.
06/29/2018 - 2018MY Fleet Final Order Due Date
08/30/2018 - 2018MY Last Day to Spec Change
10/21/2018 - 2018MY Job Last Date (Dearborn Truck Plant)
11/04/2018 - 2018MY Job Last Date (Kansas City)
08/12/2018 - 2019MY Order Bank Open Date
09/20/2018 - 2019MY Scheduling Begins (Dearborn)
09/20/2018 - 2019MY Scheduling Begins (KC)
10/22/2018 - 2019MY Job #1 Date (Dearborn)
11/05/2018 - 2019MY Job #1 Date (KC)
The 2019 Ford F-150 Order Guide will be released to Dealers on or about the date that the USOB (Unscheduled Order Bank) opens and will be uploaded to the Order Guide Section as soon as it's available.