Edit: HTTP Webhooks are now completely gone! All webhooks must be HTTPS moving forwards.
In 2018 HTTP is a thing of the past, and over ~95% of you agree. We are looking to reach 100% HTTPS by 2019. Therefore we are going to start the deprecation of HTTP webhooks completely. Here is what the timeline looks like:
On May 1st 2018, newly created apps will no longer be able to create HTTP webhooks.
On July 1st 2018, all apps will no longer be able to create HTTP webhooks.
On January 1st 2019, all remaining HTTP webhooks will be removed.
As always feel free to comment with and questions or concerns.
Shopify Apps Team