Yep, this is it. They're developed by the same team, Temporal is still beta but I believe the production version is coming out late-June.

I can't find an easy way to explain everything it does, but it pretty much allows you to write naive functions with no error handling, with month-long sleeps, auto-retries on unreliable function calls, etc etc.

It also gives you a web interface when you can inspect the running functions, and allows for external code (and other workflow functions) to signal/query the running workflows.