From The Airport Wiki

The Boeing 787 Dreamliner is a mid-sized, wide-body, twin engine jet airliner currently in production by Boeing Commercial Airplanes and scheduled to enter service in November 2008.[3][4] It will carry between 210 and 330 passengers depending on variant and seating configuration. Boeing has stated that it will be more fuel-efficient than earlier Boeing airliners. It will also be the first major airliner to use composite material for most of its construction.[5]

Until January 28, 2005, the 787 was known by the developmental designator 7E7. Early released concept images depicted a radical design with highly curved surfaces. On April 26, 2005, a year after the launch of the program, the final look of the external 787 design was frozen, with a less rakish nose and a more conventional tail. Boeing featured its first 787 in a roll out ceremony on July 8, 2007 at its assembly factory in Everett, Washington. The first test flights are not on a fixed schedule but are expected in the second quarter of 2008 after having been planned to start earlier.