The Boeing 787 Dreamliner is a wide-body jet developed by Boeing. The 787 is part of the Boeing Yellowstone Project as Y1 intended to replace the Boeing 767 and Boeing 777. The 787 is 51% composite materials. The 787 will come in 3 models: The 787-8, 787-9, and 787-3. Airbus announced the A350 XWB in response to the Dreamliner, copying many design ideas. Boeing intends to work on Y1 of the Boeing Yellowstone Project, the replacement to the 737 NG and 737 MAX aircraft..