"I got to spend time with some of the Workflow developers and they were actively soliciting ideas and thoughts about the application from me. They weren’t acting like someone who thought their app already had one foot in the grave."
This is good news.
The update this week was full of bug fixes and definitely gave the impression that Workflow is going to be around for a while - at least through the iOS 11 year.
Will Apple build automation into future versions of iOS? Maybe, but if they do I just hope it's a decent implementation so as not to cripple users when Workflow does eventually get retired.