Business jet charter, sales and acquisition firm Zenith Jet has released a “bottom-up segment dynamics” forecast that predicts 10,940 bizjets worth some $208 billion will be delivered this decade. According to the outlook, the large, super-large and ultra-long-range segments are expected to account for more than half of these sales revenues; by volume, “personal jets” will lead. A trough is expected next year, with a return to 2008 revenues and deliveries in 2015 and 2016, respectively. The report, which was prepared by Zenith vice president of aviation services George Tsopeis, also includes potential new aircraft models. According to the forecast, Bombardier will soon offer clean-sheet replacements for the Challenger 605 and Global Express XRS, for entry into service (EIS) in 2016 and 2015, respectively; Cessna will relaunch the Columbus (EIS 2016); Gulfstream will have replacements for the G350 and G450–dubbed the G360 and G470–by 2015; and Dassault Falcon will have its super-midsize jet in service in 2018. The forecast also indicates that Hawker Beechcraft could launch a clean-sheet super-light jet for EIS in 2014, but Tsopeis told AIN that this is now highly unlikely given the company’s current financial straits. Tsopeis also predicts the phaseout of the Bombardier Learjet 40XR, 45XR and 60XR, with the in-development Learjet 85 set to become Bombardier’s entry product. Additionally, he told AIN that the Gulfstream G650 will supersede the G550.