(Saving you a click): GE think they have a Ceramic Matrix Composite blade ready, replacing nickel alloys. This should result in higher turbine entry temperatures, and so higher engine efficiency. And gas turbine efficiency is already pretty astonishing tbh.

Cool stuff, pun not intended. My supervisor, who must be retiring about now, was working on this. As often it's bittersweet seeing a different team achieve the same goals, wish it was ours but I'm glad someone thinks they have it productionised.