What are the practical implications of react fiber?

I’ve read a few things on react fiber and am still not sure how this practically effects writing a react component. From what I can tell it is all internal and there is maybe one new lifecycle event. I guess I’m confused why this is not just a version number change.

It’s a major reimplementation of the core algorithm. Fiber is just a name for the project, but practically it is just version number change that brings major performance updates.

Check this post out about the changes:

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