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.

One example of this is American Airlines is pulling in deliveries of its 47 new 737-800's from 2016 to 2009 to replace a portion of its fleet of aging MD-80s. Their ultimate goal is to improve their fuel efficiency by 20% over the next 12 years. Although the 737-800 is a much better aircraft in many ways, I will miss the nice roomy seats and 2-3 seating configuration (compared to 3-3 for the 737) of the MD-80.