Recently, as in last month, the GE corporation hung a (134" circle) engine on its 747-testbed aircraft dwarfing the 747's other engines, which were once thought to be big, But this test engine is the size of a 737 body circumference.
The point of this commentary is very little news is forthcoming on the 777 X program other than a BIG test engine hangs on a GE 747 test bed. It (engine) will fly next on a 777 X wing next year. This year is almost half over it is only about a 12-month wait until the 777X has her first flight. It is a big event for aviation nerds but the 777X program life cycle is well into its halfway point journey. It's closer to first flight than it is to the first program announcement. Boeing remains tight-lipped on the progress more by design than sensing any build problems. Customers may know more about 777X progress than the press is able to ascertain at this time the news is there but it's buried under 777X confidentiality.