This is an accepted solution.
Hello, @garrettcr ,
Yes - a webhook will trigger when notes are changed for an order. If it's a draft order, it will issue a 'draft_orders/update' webhook, and if the order has been finalized, an 'orders/update' webhook. Both of which contain a "note" in the payload.
For more details about the webhooks available you can check out https://shopify.dev/docs/admin-api/rest/reference/events/webhook