I may be wrong about this, but if you are looking to purchase early next year (2011), then shouldn't the 2011's be out. The reason why ai am asking is that the supply of 2010's should be all bought up by then or at least super rare. Also if there are 2010's out there with low mileage, to me that would mean that someone bought it and brought it back do to issues. So you may find one a little cheaper, but there may be some issues with it and thats why a 2010 would be sitting on someones lot with low mileage in 2011.
Please correct my thinking if I am wrong. This is pretty much the reason why I never bought a vehicle sitting in a dealer lot that was still in the 3 year lease period.