Project maintenance and future of data fetching

This is not an issue, but a topic for discussion. I noticed, that there is a message about the future of the repo.

Quote:
> The approach this project takes is so-called useEffect chaining, which will not be a best practice in the future versions of React.

Is this a reference to [Suspense](https://reactjs.org/docs/concurrent-mode-suspense.html), or it's a reference to some other way of fetching data I am not aware of?