Another variant... Place Pages are also appearing prominently in serps for very general (single-word) searches like "electronics" and "computers" that are returning brands, stores, and types as an expansion of related searches. The Place Pages are in the middle of the page-one organic results for such queries.
The local retail stores returned are a mixture of small stores and major-chain retail outlets. See my more detailed description on this thread....
Brands, Stores, Types - Related Searches expand
So, these are here to stay, but I'm thinking Google hasn't completely pinned down the format and perhaps never will.