An article from July 2016 says it's still in the conceptual stages.
http://www.metrotimes.com/detroit/ro...nt?oid=2457378
A conceptual plan for the project, which would be paid for with $100 million in both private and public funds, was floated by the Central Park Development Group at public presentations in the spring.
In the lead-up to the proposal now known as Royal Oak City Center, the city was in discussions with Birmingham developer Jeffrey Surnow. A few months after the city entered an agreement with Surnow, he was killed in a bicycle accident in Hawaii.
http://www.surnow.com/news/royal-oak-city-center/