With close to 70 G650 models already in the skies, Gulfstream is moving into production their newest version in the 1st Quarter of 2015.
Called the Gulfstream G650ER, this plane is basically a copy of the G650 with a modification to the fuel system that will be able to carry an extra 4000 lbs. of fuel. This will make for an extended range of 500 nautical miles (926 km) and total mileage of 7500 nm (13,890 km) with a payload of 8 people flying at Mach 0.85.
The current owners of the G650 will not be left out in the cold as the changes to fuel system can be done as a retrofit in less than a week, also starting in 1Q2015. Gulfstream has not quoted a price yet but industry sources say it will be in the $2 million range.
Test flights earlier in the year from Los Angeles to Melbourne (6,947 nm) and from Hong Kong to Teterboro, New Jersey (7,494 nm) were completed with excess fuel in reserve
According to this performance map put out by Gulfstream, owners will be able to fly from Dubai to Los Angeles and from London to Honolulu with no problems.