Safeguarding Our Hospitals' Futures Act of 2008 - Requires the Secretary of Health and Human Services, in the case of discharges occurring on or after October 1, 2008, to continue to apply budget neutrality on a national basis in the calculation of the urban hospital wage floor for discharges occurring during FY2008 under title XVIII (Medicare) of the Social Security Act (through a uniform, national adjustment to the area wage index).