Straight Up, the engine for the S-92 is the GE CT7-8, a growth developement of the venerable T700 used in the Black Hawk. Here's a link...
GE CT7-8
I don't know why, but this CT7-8 link does not seem to indicate that this new T700 series engine is a FADEC equipped engine, which it definitely is.
I also agree with you, the S-92 will be a major player in its market.