What does this sticker mean?

Its probably just a marketing sticker, that unit might have a few non-standard options that were bundled for that package. Here in the Pacific NW I see "Northwest Edition" on different units to signify the "might" be better equipped for winter or as is often the case they slap on some diamond plate up front to deal with rocks. With the year you might be able to google for a brochure that has more info.