Boeing shows about 35 remain on the order book. Below is the link on the brief history of the 747-8 since 2010.
Airways News quotes:
The future for the 787-8 is now. It has had five years as an Airbus A380 alternative and now Airbus has run this dog as far as it can. Boeing needs to refocus the worth of the 787-8 and no longer shadow the A380. It can haul almost a battalion of military. Three of its type would land the regiment. Six goes the equipment and supplies. All the military needs is an enormous landing strip in place. Not practical until portable landing strip frames are invented for a tarmac. It has to land and hold a million pounds on a hot day.
Moving back to the topic of passenger service requires more innovation, capturing the imagination of paying passengers. The A380 has captured the imagination of airlines, but once again that dog doesn't hunt as much as it did back in 2006. The 747-8 must exceed passenger expectation in travel, price and amenities. The travel becomes part of the vacation itself as if in cruise ship fashion. The passenger must associate how nifty the 747-8 has become over anything else the air. Where today, The word "efficiency" translates into small spaces for the passenger.
The 787-8 must now innovate inside the hull if it is to survive. Using new concepts unique to the 747-8 configuration. Flying is a social event, it is a private indulgence, and most of all it is a 747 experience all coming from what a 747 has inside. The metrics for the 747-8i has been achieved from engineering and innovative flying upgrades. However, this next round for the 747 is reserved for a proprietary experience for the passenger. Boeing must set the seat count to no more than 450 consenting passengers. In that space is should reek of Boeing innovation exclusive only to the 747-8. This is the only way the 747-8i will survive, as a passenger carrier, using a proprietary suite of excellence. The goal should set the standard, "I want to fly on a 747-8i".
The 777X is being built for a packed house. The 747-8ix should be built for an exclusive house.