What version is fitted to the 787-9?
I don't work the 787, so I'm not as intimately familiar as I am with the 747, but the GEnx-1B "PIP 2" certified over 2 years ago. So I suspect most if not all GE 787's delivered in the last 2 years were delivered with PIP 2 engines. However GEnx-1B engines can be freely interchanged so what a 787 was delivered with and what it's flying with today may not be the same.