Hope it is still OK to talk about the aircraft in here
Seems live GBU 12 and 32's were air dropped from the B. Previous releases were inert I believe.
Marines on target with F-35 live-weapons release > The Official United States Marine Corps Public Website > News Display
Not sure what to gleam from "....the munitions employed by the pilots were the same as those dropped by legacy Marine Corps fixed-wing aircraft, but the dimensions, installation and technology that targets and employs them were different."
I get the targeting systems is different, and hanging it in the weapons bay is different, but dimensions? Is it a different dimension GBU? Maybe a smaller 32 is required to fit? Or I may be reading too much into it.