The opening date is set for the Saks Off 5th at the Metroplex in Plymouth Meeting. According to a Tweet by The Goldenberg Group the date is May 5th. See the Tweet below:
We're happy to announce the grand opening date of @SaksOFF5TH at Metroplex in #PlymouthMeeting: May 5, 2016! https://t.co/HWjGzjE19H
— The Goldenberg Group (@GoldenbergGroup) April 3, 2016