Welcome back sub-prime? Well not necessarily. But Fannie Mae and Freddie Mac has revamped a 2yr old refinance program created under HARP (Home Affordability Refinance Program) and has re-launched it as HARP2 or DU Refi Plus. HARP2/DU REFI PLUS’ new features will increase the availability of refinancing to millions of Americans currently left on the sideline due to falling home values. Estimates put this number as high as 2 million new eligible loans.