Unforgiven was first held as the pay-per-view (PPV) in April 1998; In Your House was a series of monthly PPV shows first produced by the then-World Wrestling Federation (WWF, now WWE) in May 1995. The In Your House branding was retired following February 1999's event, as the company moved to install permanent names for each of its monthly PPVs. Unforgiven then returned in September 1999 as its own PPV event, thus establishing Unforgiven as the annual September PPV for the promotion, which was renamed to World Wrestling Entertainment (WWE) in May 2002. The 2007 event was the tenth event in the Unforgiven chronology and took place on September 16 at the FedExForum in Memphis, Tennessee. After being a Raw-exclusive PPV for the past four years, the 2007 event featured wrestlers from the Raw, SmackDown!, and ECW brands, as following WrestleMania 23 in April, brand-exclusive pay-per-views were discontinued. It would in turn be the first Unforgiven since the 2002 event to feature the SmackDown! brand, and the first to feature ECW. It was also the last Unforgiven PPV in 4:3 format until January 2008 when all WWE shows went in high definition.