In product advertisements product is shown as New and better than previous one. But if someone notices advertisement of previous product then it was the best product and does it works perfectly. If the older product was perfect then how could current product be better?
New is generally written on packaging, advertisement before brand/product name. Brands come with a new concept for their products which is better than previous one but doesn’t mention often how it is better and why it is new.
The question is how they can claim that the product is better than previous one. Though some improvements might have been done but again if older product was best then how new one could be better than previous one.
Generally, New should be used if brand is coming up with a new product. New can be written on existing brands when advertising new products on existing product packing.