They made it! On October 28, the climbers reached the top. Stéphane Schaffter, a Swiss alpinist, Lhakpa Tenzing Sherpa (known as Apa Sherpa) who has a record 19 Everest ascents under his belt, and Little Karim Balti, who has accompanied many sportsmen on expeditions above 8,000 meters, scaled the virgin peak, and as the first to the top, they named it Antoine LeCoultre’s Peak. The mountain raises 6589 meters, or 21,617 feet above sea level. They were each wearing a Jaeger-LeCoultre timepiece: a 1958 Geophysic Chronometer, a Master Compressor Extreme Lab, and a new and as yet undisclosed extreme creation prepared by the Manufacture workshops in the Vallée de Joux. Their watches performed admirably in the challenging conditions.
You can read more about the expedition at the Jaeger-LeCoultre website.
Here are some images from the expedition: