NEW YORK--(BUSINESS WIRE)--Fitch Ratings has assigned a 'AA' rating to the following Hillsborough County, Florida's (the county) revenue bonds: --$134.4 million community investment tax (CIT) refunding revenue bonds, series 2015. The bonds are scheduled for sale on a competitive basis on July 8. Proceeds will be used to refund outstanding community investment tax revenue bonds, series 2007 for debt service savings and to refund approximately $40 million of outstanding commercial paper. In addit