"Therefore we will be exploring opportunities to relocate our headquarters within the Detroit Metro area to a more cost-effective location, mindful of our corporate employees' commute and other factors."
This is the actual quote, and to me it seems like they consider Ann Arbor as part of metro Detroit.
I also get the impression that they'll move to another suburban office building, because if they were moving to a downtown, they would be trying to sell the rebranding angle.
I do think though, that moving to a downtown [[Ann Arbor or Detroit) would improve the company's image, especially with the younger demographics. I think it could also help with recruiting efforts for if they ever have to rehire people. Moving to a downtown would be more expensive though, those vast suburban office parks exist because they're cheap.