In late 2014, 98,000 square feet of the vacant Strawbridge's re-opened as the aforementioned Century 21 discount department store. This was seen as the first stage of the mall's redevelopment.
Graphic from Wikipedia / "TigerK_69"


A rendering of the exterior of FASHION OUTLETS PHILADELPHIA. A 325 million dollar renovation, which commenced in late 2016, is reconfiguring the 1970s-vintage concrete caisson GALLERY structure with large expanses of glass and "Streetscape" stores.
Drawing from www.preit.com (Pennsylvania Real Estate Investment Trust)


An interior view of FASHION OUTLETS PHILADELPHIA. The renovated center city shopopolis is scheduled to re-open in 2018.
Drawing from www.preit.com (Pennsylvania Real Estate Investment Trust)