It's the same exact ppl working on it. The CTO now runs a ton of teams at MSFT. They just cloned the app with a different backend and a few new features. The only thing that changes is the brand. It's like accompli. https://www.linkedin.com/in/fowlerchad/ - runs a ton of things now
That's not quite true. Microsoft To-Do doesn't implement nearly the same set of features than Wunderlist does.