Originally Posted by
KenV
No. That's the problem. There are no engines available that fit their requirements, and it appears increasingly likely there won't ever be. So they either convert the order to the classic A380 or cancel the order and buy a different aircraft. Since Airbus was not able to deliver the promised aircraft, cancelling the order will not entail any penalties. Emirates previously cancelled their order for A350 without penalty when that aircraft failed to meet their performance promises, so this is not something new for them.
Won't Mr Rolls sell you a Trent XWB -75 or -79 which fits the 75-80 rating with ease? You can even hang them on an A380, as Airbus have proven.