Amazon has some big plans for its newly acquired Whole Foods Market division.

Since Amazon officially added the natural foods grocer to its family, the online giant has made big moves to integrate the brand. It offered lower prices on a range of key grocery items in the stores, launched the Whole Foods private label products on Amazon, and added Amazon Lockers to select Whole Foods stores.

“It’s been lots of activity, lots of energy and we’re really excited to show customers what’s possible when we join forces here,” Brian Olsavsky, senior VP, CFO said on Amazon’s third quarter investors’ call on Oct. 26.

He also hinted at the company’s next big step: developing new store formats. While he would not commit to specifics on the project, Olsavsky revealed that the company is already “experimenting” with a lot of formats, and using Whole Foods as a testing ground. Crediting the company’s expertise, Olsavsky expects the Whole Foods team to bring a new perspective to a potential format concept.

“Whole Foods really gives us a vast head start on that and a great base,” he said on the call. “It’s a great team … who has a lot of history and … they probably have 10 years to 20 years of learnings that we…