The Shops at Blackstone Valley in Millbury, Massachusetts, has announced plans for nearly 35,000 square feet of new retail space. The new buildings will add about 10 new businesses to the outdoor mall, including national burger chain Shake Shack, salad bowl spot Sweetgreen, and a medspa chain. More businesses are expected to be announced in the coming months. The property is also partnering with the electric-vehicle charging network Electrify America to install EV charging stations.