If I'm on Kubernetes already, what does this bring over something like ArgoCD? Is it just a managed version of the same feature set, or does it do things Argo can't?

It seems to hint at some sauce to swap in production-like data but I can't see much on that usecase. (https://releasehub.com/use-cases#migration-test-environments)

Having a tight integration into Github would be great (https://docs.releasehub.com/whats-new/january-2021#github-de...), this is definitely an area that has room for polish in ArgoCD for example.