Unlikely. The HND flights are often sold out. Either full in J and W or oversold in Y with opups. The 787 would be a large capacity cut for a route that is doing very well.
Outside of MILT giving Australia another HND slot (and QF jumping on it), or QF getting enough aircraft to replace one daily SYD-TYO with twice daily (1xHND, 1xNRT), I would expect HND to be one of the last 3 routes (along with SCL and JNB) to lose the 747.
SFO, HNL and the seasonal North American routes will be the next to go to 787 (or return to fully 330 in the case of HNL).
With firm orders as they stand, Qantas can't retire all the 747s and maintain their current route frequencies, much less open new routes.