I asked someone in a Foley's department store (bought up by Macy's a couple of years ago) why they had their ornaments up so early. The store wasn't decorated, but there was an area that is expanded later in the season to a full-blown tree and house ornament department. She said that designers and planners would come in that early to start picking up and planning for the season, and that people who shipped ornaments wanted to get their products out early. That made sense, and it didn't hit the whole store for a couple of more months. We used to enjoy going to take a peek at the new ornaments for the season, but you could walk away from it and that was it.
The grocery stores are probably all ready to push Valentine's Day stuff out next month. . . :)