News items can be a part of marketing, sales and editorial all at the same time. First it’s to inform the reader about something new, which can be a product, a development within a brand or an introduction of a person for example.
But if a brand is part of the sales, they mostly get some extra exposure in the magazine by putting some focus on one of their products. In that way you can work both ways: informative and marketing related. A specific product can also be a part of a bigger marketing campaign that the brand has set up.