Not sure if you’re new to the Flutter / Dart ecosystem but one of the nice advantages that comes as a side effect of having “Google scale” backing it is how nice the upgrade experience is.
Generally you just run a single command of dart fix and it will statically analyse the code and automatically rewrite anything that’s outdated to use the latest syntax for you.
I'm horrified if I upgrade it everything will break and I'll have to commit to fixing it.
Still, I'm very excited about this, I'd argue flutter is what react native wanted to be.