Summary - Aircraft with TR3 hardware will start rolling off the production line next month, but the associated TR3 software build is late and isn’t expected to be validated and accepted until at least next April.
So deliveries will stop and LM will store all new build TR3 aircraft as they roll off the line until the software is approved.
TR3 is necessary for the long awaited Block 4 weapons upgrade.
https://www.defensenews.com/air/2023...software-woes/
Pentagon to halt upgraded F-35 deliveries in July amid software woes