These two quotes in the article shows how close we are to some answers IMO:
While LEAP will transition to eventually replace CFM56, the LEAP is already sold out for delivery in 2016 and 2017
LEAP will contain shrouds in the turbine made using ceramic matrix composites, a material with microscopic fibers woven together. Its fuel nozzles will be made using the 3-D manufacturing process which layers material upon material into the shape of the product. GE has researched both technologies in local and national laboratories to develop parts but also to prove results. Even after manufacturing a working prototype, the company had to figure out how to manufacture thousands of the same part before it can be declared engine and market ready. “We’ve been working on this for more than a decade and that’s why we have the confidence that we do,” Jewell said.
The first quote tells me that if GE is going to deliver on their sold out 2016 orders, they need write some checks soon!