A sixth-generation fighter is a conceptualized class of jet fighter aircraft design more advanced than the fifth-generation jet fighters that are currently in service and development. Several countries have announced the development of a sixth-generation aircraft program, including the United States, Russia and China, while Japan, Italy, the United Kingdom, France, Germany, Spain, and Sweden have joined together in collaborative multinational programs in an effort to spread development costs. The first sixth-generation fighters are expected to enter service in the 2030s. From Wikipedia
