It would be rather difficult for UPS to accelerate the 747-400 program. The company just announced the core team of managers, and the search for instructors has just begun with initial selections to be anounce later this summer.
Although we have only announced the purchase of eight new 747-400's, it's common knowledge around here that we will be buying many more 747-400 conversion aircraft. The new aircraft we bought only due to the longer timeframe for delivering converted airframes. All of this is driving the 2007 implementation date.