The article leads one to speculate about Board approval to proceed with the 777X project through 2019.
Don't speculate just surmise!
The engine thing is really dependent on over-all concept plans. This is a Bigger is Better Boeing concept and Roll-out. Not unlike an Airbus photo campaign, which neglects the techno talk, and expounds on the virtues of largeness. Engines keep returning to the conversation like a little child reminding an adult about its needs for a candy bar.
Engines, are not at the top of the Board's authority for granting list of things to announce.
However, GE goes forward in a pursuit of something big when comes to engines, while Rolls pursues a conservative neutral stance like a defensive back in American Football awaits the play before it reacts. I surmise big engines will be attached to something very big and something very complex, but maintaining a straight approach on proven technologies from Boeing's Flight Bag of tricks. No ground breaking progress here, just enhanced 777X design from its vast parts bin. This is a smart approach and will make a great use of the 777 frame. Don't make something all-new, use something new to make it all better.
To surmise is like Sherlock Holmes; make observations and deduce logical conclusions. In conclusion, Boeing is going to build something big with its just released technologies from other Airplane programs on the 777X.