Here is a post from the bronco forum giving you a idea about ok to buy (Oktb)Phase 1 Mass Production" on Monday, March 29th. This does NOT change the published, public Job 1 date, but dealer demos, press cars, and Bronco orders will be built long before May. Nothing can be shipped to dealers for sale until the OKTB (Okay To Buy) is issued, typically through a series of batch builds, stops, and inspections. It's not unusual, however, for the OKTB to be issued BEFORE the published Job 1 date. This actually happened with the Ranger's launch at MAP."