I assume he is referring to the current status with whatever armaments are there/getting delivered at the moment/or on their way. It’s more to the with DU munitions (instead of the normal type).

The British DU munitions are the start and US DU munitions are forthcoming thereafter.

Quote:
At the same time, it turns out that the upcoming British delivery will be only a pilot project before the mass deliveries of American 120-mm M829A1 and M829A2 shells, also with a depleted uranium core.