The stunning reversal comes as a relief to critics of the plan to put a $1.3 billion arena near City Hall at the edge of Chinatown.

The ownership groups of the Philadelphia 76ers and Flyers announced plans to build a new arena in South Philadelphia that would open in 2031.

The Philadelphia 76ers are staying in South Philadelphia in the latest -- and likely final -- twist in their quest to build a new arena. The Josh Harris-owned 76ers and the NHL's Flyers (owned by Comcast Spectacor) made an announcement Monday morning that the two teams will continue sharing a home in the South Philly Stadium Complex and will build a new arena slated to open by 2031 in a "50-50 joint venture.