SEATTLE (AP) -- Boeing Co. announced 35 new orders for its 787 Dreamliner on the eve of its Sunday unveiling of the new commercial jet.

Air Berlin ordered 25 and ALAFCO Aviation Lease and Finance Company of Kuwait is taking 10, Boeing said Saturday. Together, the orders are valued at $5.62 billion (euro4.13 billion) at list prices, although customers typically negotiate discounts.

Boeing now has orders for 677 of the new 787s from 47 customers. The new plane's first flight is scheduled for later this year, with the first delivery to a customer, Japan's All Nippon Airways Co., in May 2008.

Air Berlin's order is the largest single order placed by any European carrier, Boeing said. The airline also secured 10 options and 15 purchase rights for additional 787s, Boeing said.

The 10 ordered by ALAFCO are in addition to 12 787s it ordered in March. The earlier orders are to be placed with Kuwait Airways; it was not clear where the 10 new orders would be placed.

The 787 will be the world's first commercial jetliner made mostly of carbon-fiber composites, which are lighter and sturdier than aluminum. Boeing has said that and other technological advances will make the 787 more fuel-efficient and cheaper to maintain.

The new jet will make its public premiere Sunday in Everett, where the planes are assembled about 30 miles (50 kilometers) north of Seattle.

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