https://www.cnet.com/news/kitchenaid-brings-its-own-smart-oven-to-ces-2019/

The powered grill attachments come with the oven, but if the steamer and baking stone attachments will be available separately. Each attachment is dishwasher-safe and fits into the powered hub at the back of the oven.  

The Smart Oven+ will also work with the Yummly and KitchenAid apps. Yummly integration allows you to choose a recipe, update your shopping list and have the ingredients delivered to your door. Connect your oven to the KitchenAid app, and you'll be able to control it remotely. You can view the oven's status, control modes and receive notifications on your iOS or Android device.