Earlier today a few little birdies told me about the Shortcuts beta being open to sign up for if you have a developer account. If I hadn't already had one I might have been tempted to sign up for it just for this!
It seems Apple is sending out the invitations pretty quickly as mine has already arrived. I'm really looking forward to testing this and getting stuck in - iOS 12 has made some big promises regarding automation, I bet it will live up to them!
You can read more about the current beta over on MacStories.