Depends who made them for Toyota (might be Spark for those Yarises??) but after a few months of exclusive official use, normal retail releases are often allowed under maker's own name or brand, usually cheaper and in different/wider choice of liveries. Also dealer showrooms can offer a fairly rapid turnover of merchandise lines, so start discounting sooner than expected. No idea how Toyota operate, but I've found several clearance bargains from eg Mercedes/Mazda/Peugeot/Citroen/Alfa/Volvo showrooms over the years of relatively new lines.