Sridhar Ramaswamy, SVP, Ads & Commerce at Google (GOOG), says in a blog post:

We're entering an exciting partnership with Walmart (WMT) to bring you hundreds of thousands of products at Walmart's Every Day Low Prices - everything from laundry detergent to Legos - that you can buy through voice with your Assistant on Google Home or on the Google Express website or app. We're thrilled to partner with one of the most popular stores in America to help make your shopping faster and easier.

Walmart will be launching on Google Express in late September and if you want to be notified when they join, let us know. Starting today, we're offering free delivery on Google Express as long as your order is above each store's minimum. There's no membership required so no matter how you shop -through voice with your Google Assistant or on the website or mobile app- you'll get free delivery within one to three days. We're just getting started, and there will be lots more exciting experiences to come, so stay tuned."