React v17.0.0 is now available. Unlike previous releases, the new version doesn't come with any new developer-facing features, but rather improvements making it easier to upgrade React. As a result, it will now be possible to upgrade your app to future React versions either all at one, or piece by piece.
- To enable gradual upgrades, React changed how React attaches events to the DOM under the hood. Event handlers will be attached to the root DOM container into which a React tree is rendered.
- View a full list of new changes in this release here.
- The release comes a week after the React team also revealed the new JSX transform feature will be supported by React 17, as well as React 16.14.0, 15.7.0, and 0.14.10.