If the statements by Ford about what they did to improve the engine for the F-150 are correct, then yes JLR was meant to have benefited from this according to Ford.
Quote from article on this:
During design, changes were made to common components that Ford shares with JLR's variants of the engine. "For example, we put many updates and tweaks important to the durability of the engine into the crankshaft line. JLR also received the benefit of those updates," Pumford told us. "Other parts of the Ford engine are entirely new, like the block, EGR system, and a different fuel system. Everything existing (in the older engine family) was modified for F-150."
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These changes were made for the 2018 F-150, so if the new engine was manufactured after this point you would hope it has the new improved crank design.
No guarantees on this given JLR could have also bought up all the old design engines that Ford won’t use, and now are effectively consuming this old stock.
All speculation - would be good if when the garages doing the work for Art and M005 could confirm when the “new” engines had been assembled.
I have no doubt that JLR know exactly which cranks they have used and what the true story is - but don’t expect them to give out this information.