Can anyone speculate as to what kind of advancements in precision machining might enable this sort of new jet engine design? I feel, as a layperson when it com

Can anyone speculate as to what kind of advancements in precision machining might enable this sort of new jet engine design? I feel, as a layperson when it comes to aerospace, that so much of the innovation is bounded by advancements (or lack thereof) in machining.