777x will most likely slip further into 2029.
Boeing has a tough decision coming up to make if it is not already here.
Boeing leadership is going to be forced to either put their pool of limited and dwindling supply of experienced engineers on 777x or F-47. If Boeing leadership chooses 777x, they run the risk of the Air Force, with pressure from Congress cancelling the F-47.
This is entirely the fault of Boeing's. It started with leadership's boneheaded idea to merge with McDonnell Douglas in the late 1990's. Following up that dumpster fire with leadership deciding to hire, non-engineer CEO's. Does James McNerney or Dave Calhoun ring a bell? The kicker was letting Alan Mulally go. Then Boeing leadership decided bringing in a boat load of MBA's, Bean Counters and outside expensive Consultants was a smart idea who as a group of misfits recommend to the Boeing leadership bozos to force out their older and more experienced engineers and replace them with young non-experienced engineers.
Let's not forget the fact that airplanes, bo----s or fighters are more technically challenging to design, analyze and build these days. But Leadership thinks saving money forcing out their experienced engineers was a smart bet.
So, Boeing leadership is now approaching a crossroad. Where they will be forced to decide what program to put their experienced engineers on. It's a losing proposition no matter what Boeing leadership decides. They can put their most experienced engineers on 777X to slow the schedule slip, resulting in not enough engineering heads to put on the F-47, which will create a huge schedule slip and cost overruns, resulting in a risk of F-47 program cancellation.
If you are no longer at Boeing, I'd say sit back and grab your popcorn and watch this turn into one of Boeing biggest dumpster fire ever.