Yamaha or any other manufacturer may periodically offer discounts or promotions, but these decisions can vary and are typically not predictable far in advance.
To make an informed decision about when to buy a Yamaha FZ-S or any other motorcycle, I would recommend checking Yamaha's official website or contacting Yamaha dealerships near you for the most up-to-date information on pricing, promotions, and any potential discounts that may be available. They will be able to provide you with the most accurate and current details regarding purchasing options.