Fannie Mae and Freddie Mac’s mortgage servicers will soon be required to review and respond to short sale requests within 30 days of an offer on the property and to provide weekly status updates if the offer is still under review after that, under new standards issued this week by the Federal Housing Finance Agency. Under the new guidance, effective June 15, servicers will have to make a final decision within 60 days of receiving an offer on a short sale property. The FHFA said the change is an attempt to hasten the traditionally time-consuming and difficult primary alternative to foreclosure.