Are subscriptions with bundled products supported in Magento?

Yes, bundled products work with subscriptions.

Can I use Magento’s inventory controls with subscriptions?

Using Magento's stock control for subscription products isn’t recommended, because if a payment is received and the product is out of stock the order will fail to be created in Magento. If you have another stock control system, it would be best to track the stock separately from your Magento website.

Do Magento subscriptions work with guest customers?

Subscriptions work with guest customers. If a customer registers immediately after placing an order, they will be able to view their subscription from their account. It’s recommended that you encourage them to create an account after creating a subscription so they can manage their subscription going forward.

Is it possible to update the SKU or URL for a subscription in Magento

When a subscription is created in Stripe, the Product ID is saved in that subscription's metadata. Therefore, changing the SKU or URL will not affect recurring subscriptions.

What happens if I change a subscription’s price in Magento?

If you change a subscription’s price in Magento, when the recurring order is created a Custom Price will be set on that order which will match the original order price. The customer will always be charged the original amount unless you manually migrate the subscription from the CLI to another product that has a different price.

How do Magento customers update expired payment methods for subscriptions?

You can decide what happens when a subscription’s card expires through your Stripe Billing settings. In most cases, you would want Stripe to send a link to the customer through which they can update their card. If they update it through the Stripe hosted page, Magento will automatically reflect the change.