You think so?
They have the 91FX, and they have the 120 AX that "fits" where the 91FX does, and already having dropped the 108 I doubt that there is another engine in its class comming out again.
I also think that if your plane is a 60 size and it has a 91FX and needs an "extra kick", then maybe the airplane is too big/heavy already and it would be better to push it up a little and use a 120.
Maybe we'll see bigger engines, and why not? Maybe gassers! They already have a well stablished reputation, a good one I must add.
Just my $0.2 Mexican pesos