State Management continues to raise discussions in the ecosystem. Many continue to vouch for Redux, while some deem it too boilerplatey and choose to stay with pure setState instead. MobX is also a popular option, and Microsoft has built a state management library around it.
React is everywhere. After the FUD surrounding the patents have cleared with the release of React.js 16, Microsoft joins to use the popular React.js library in the email service Outlook.com - originally known as Hotmail before MSFT acquision.
Webpack has risen to the status of being the defacto module bundler. The downside felt by many is the conceived complexity of setting up Webpack. There are boilerplates and other methods to simplify starting, but the recent trend in general in this space has been simplifying setup.
After what feels like a long period of stagnation for React.js, the open source team working on the popular library has accelerated pace after the release of the large scale rewrite in React 16. With 16.2 comes a new feature to React.js: Fragments