I think New York - Hong Kong is a bit ambitious even with this range improvement with the usual routings and even polar you will be fighting headwinds.
Its basically 7000NM great circle, 7500 still air range leaves little margin.
Eastbound, no problem, awesome machine but I think they need to match the 8000 NM range of the Global Express to be able to cover this route reliably.
They probably have that up their sleeve.