Brazilian aircraft manufacturer Embraer is to unveil a conceptual mockup interior of its mid-light and midsize business jets (the MLJ and MSJ, respectively) tomorrow morning at the NBAA Convention in Atlanta. “We are introducing [but not officially launching] two products between the Phenom [300] and the Legacy 600, so that if a customer wants to upgrade from the Phenom 300, this customer can stay with our brand,” Embraer’s executive vice president for executive jets Luis Carlos Affonso told AIN. Like Embraer’s Phenom 100 and 300, the aircraft will share the same fuselage cross section, but will have higher commonality–90 percent we’re told. The MSJ’s NBAA IFR range is estimated to be 2,800 nm (Mach 0.80, eight passengers), and the MLJ would have a 2,200-nm NBAA IFR range (Mach 0.78, eight passengers). The company is currently considering powerplant offerings from Rolls-Royce, Honeywell and Pratt & Whitney Canada for the two twinjets. Embraer has not announced pricing or official names for the two new airplanes; however, the company has trademarked the Legacy 400 and 500 monikers.