This seems to be the new term although it's often mixed in with "window dresser" on English-speaking websites. Type both into Google and you'll find pages and pages of sites. I suppose the idea that the term "window dresser" suggests that the person decorates shop windows whereas the "visual merchandiser" also does in-store displays, exhibition stands etc. I've indicated a French website that defines the term "étalagiste-décorateur" in French.
PS: "Visual merchandiser" is NOT an Australian term - and I'm a Brit who just happens to live in Oz.

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Note added at 14 hrs (2007-11-01 06:29:25 GMT)
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In answer to 1045, yes, I did stop to think about differences in vocabulary from one country to another and I checked things out on the Internet. I have found 2 definitions in answer to your question, one the French definition of an étalagiste-décorateur, which is what we are talking about here, and one in English about the duties of a shelf stocker. They are rather long (apologies to other Proz members) but I admit to being rather piqued by the tone of the answer!

Résumé
L'étalagiste-décorateur conçoit et réalise des étalages pour les vitrines des magasins, les stands d'expositions, les salons. Sa mission : promouvoir des produits, des marques, des services. L'étalagiste doit attirer l'attention des passants, donner aux clients l'envie d'entrer et d'acheter. C'est aussi un métier de communication commerciale, marketing et publicité.

Shelf stockers are employed in a wide variety of retail outlets and their duties vary somewhat depending on the size and type of store. However, in general, they:
• unpack products received by stores and may count, weigh or sort items
• check shipping and purchasing documents to ensure that the proper items and amount have been received and that items have not been damaged or spoiled
• stock shelves, racks and display areas with merchandise and store extra items in stockrooms
• regularly check shelves and displays to ensure that they are well-stocked, attractively organized and merchandise is protected from damage
• obtain articles for customers from display locations or from the stockroom
• direct customers to desired items and anticipate customer needs as much as possible
• report out-of-stock situations to management and correct or report any pricing discrepancies
• clean up broken items and other messes
• sweep aisles, dust display racks and perform other general cleaning duties.
Shelf stockers who work in grocery stores also may:
• maintain displays of perishable items such as produce or dairy products by rotating items to keep the freshest in the back or on the bottom
• bag or box purchases for customers
• carry or use carts to carry customers' purchases out to the parking lot and help customers pack groceries into their vehicles.
Shelf stockers working in other large retail outlets may:
• use bar-code scanning equipment to record incoming stock, verify pricing and maintain a computerized stock inventory
• wrap items such as sound recordings in cellophane
• attach protective devices to merchandise to protect against shoplifting.
Those working in smaller stores may:
• use a stamp or stickers to price items according to price lists
• sweep or shovel snow from the sidewalk in front of the store
• act as cashiers (see the Cashier profile for more information

No time to sort out the formatting, I'm afraid.