Some of popular trends in ecommerce website development are:

• Live-streams and videos. Videos are more personal than photos, give a much better idea of how the product will look like in real life and encourage people to buy it.

• Augmented and virtual reality. Ecommerce vendors adopt AR and VR for promoting their products and helping consumers to get a feel of an item before making a purchase.

• Chatbots. Using chatbots help online stores provide better and faster customer service to online shoppers.

Sure, implemeting all the new developments into each new ecommerce site is hardly possible and may significantly increate the app development cost. Thus, it's necessary to carefully weigh their usefulness and implementation cost before rushing to add them all to your site.