In 2015, the Air Force awarded Boeing the contract to replace the planes in the 747s in the Presidential fleet
In 2018, Boeing and the Trump administration agreed on a price of $3.9B for two new planes.
The original scheduled called for delivery, this year. The bankruptcy of a supplier and other delays pushed delivery of the first to 2026 with the second one delivered the next year.
Now, the projected date for both is 2029.
Because this a fixed price contract, Boeing is projected to take a $2B loss on the project.