Is 557, along with the remainder of the aircraft projected to become ETOPS certified, is/will be ETOPS 120 or ETOPS 180?

I ask because if ETOPS 120, this will very likely only be used to shave flight times off of routes within the current network. If ETOPS 180, that almost assuredly means Hawai'i is in the future, as from my knowledge that's one of the very few places that requires ETOPS 180 just to get there.