"Today, it is our pleasure to officially announce the newest member of our 737 family, the 737 MAX 10," Kevin McAllister, head of the company's commercial aviation division, told journalists as the Paris Air Show got under way.
It quickly announced more than 100 orders worth some $13.5 billion (12.1 billion euros), although some were customers changing their selection of models from previous orders.
The MAX 10 will be the largest of the updated 737 series, which competes head on with Airbus's A320 neo family. With the latest advances in engines and aerodynamics, they promise significant fuel savings to airlines, which have responded with hundreds of orders for single-aisle airlines that are the workhorses of their fleets.
Airbus, which moved first to update its aircrafts used in most midrange flights, now has a 60 percent market share.
The 737 MAX 10, which can carry up to 230 passengers, is the largest in the class, and Boeing said it would be five percent cheaper to operate than the Airbus A321neo. As these planes can carry more passengers, they have attracted interest from low-cost airlines as well as carriers looking to exploit their range that allows them to make flights across the Atlantic.