This week we checked on the progress of Rockville’s first Aldi store, now under construction in the former H.H. Gregg space next to Petco at Congressional North. You wouldn’t know it by the empty shell seen here, but the company tells us the store is still on track to open this fall as planned. This is one of six new Maryland stores for Aldi, a German grocer that sells high-quality private-label brands at rock-bottom prices. For more on Aldi’s unique business model, click here. For info on Rockville’s upcoming Wegmans store, click here. And for the latest on the new Trader Joe’s in Travilah, click here.