The 787 is way behind schedule with first test flight planned for beginning of this year and still has not flown. Airlines are cancelling orders as NW Air (now Delta) is reducing its order for the 787 because it is too expensive on a per seat basis. Read this yesterday, but cannot find the link.
I doubt US airlines will have capital to invest in buying many 787's unless the Feds pick up the tab, which is unlikely. The investment banks are maxed out and Boeing may not be able to take on more debt to finance these for the airlines. With oil at $50 or less per barrel I would be surprised to see the non US airlines fulfill all the orders for the 787 as international travel dwindles. Look at British Airways trying to merge with Qantas in an effort to regain financial strength. Airlines are feeling recession more than most industries (especially those foreign ones financed by oil revenues that have sunk by 60%) and first thing to go will be orders for new planes IMO.