When sellers release a newer model or versions of a product, Amazon will add a link or widget to the product detail page that can redirect the customer to the product detail page of the newer model. This is especially useful for customers when the older version is out of stock or has been discontinued.
In order to classify for a newer model, the product will require the same function, quantity, type, and style.
In order to submit for a newer version relationship, see the Adding or removing new model link on detail page.