Delivery giant UPS unveiled a multibillion-dollar order for 27 Boeing freighter planes, while keeping Boeing's rival Airbus on tenterhooks over the fate of a superjumbo order. The new order triggered speculation over the separate order from UPS for 10 of the Airbus A380 freighters. Airbus has been plagued by delays to its gigantic plane.But UPS said in a statement: "The order for the 27 B-767s is not related to UPS's ongoing review of its order for 10 Airbus A380 freighters." The A380 "superjumbo" is now two years behind schedule, with Singapore Airlines due to receive the first passenger version this October. The cargo version is not due until mid-2010. UPS is the only remaining customer after FedEx pulled out last year. "We want to know, is it going to be there on that schedule or do we have to look at alternatives?" UPS spokesman Mark Giuffre told AFP.