"The Office of the Director, Operational Test and Evaluation said in its annual report, submitted to Congress on Jan. 31, that dedicated operational tests for the F-35’s Technology Refresh 3, or TR-3, upgrades will probably start in mid to late fiscal 2026, or around next summer. Those tests are intended to determine whether TR-3 is operationally effective.
Lt. Gen. Michael Schmidt, the military’s F-35 program executive officer, said in a statement to Defense News that as of January, Lockheed Martin has delivered more than 100 TR-3 equipped fighters. All of those jets have software allowing its pilots to conduct training flights, including combat training."
https://www.defensenews.com/air/2025/02/05/key-tests-for-lat...
Yeah, by that standard, we’ve jumped the gun on the B-21 (and the B-2 and the B-1 and...) because the B-52 isn't “finished”, with B-52J Initial Operational Capacity now expected in 2033.
And let's not have any silly claims that those manned fighters could be completely replaced by cheaper drones. Maybe that will be possible someday but for now AI software is nowhere near ready to take on the full mission set.