Minor edits in response to PR feedback

Author: bvaughn

content/blog/2018-02-07-react-v-16-3.md

@@ -3,7 +3,7 @@ title: "React v16.3.0: New lifecycles and context"
 author: [bvaughn]
 ---
 
-This release includes a new class component lifecycle (`getDerivedStateFromProps`), a new `StrictMode` component, an official context API, and a better way for managing refs!
+This release includes a new class component lifecycle (`getDerivedStateFromProps`), a new `StrictMode` component, an official context API, and a new ergonomic ref API!
 
 For the past few months, the React team has been working on support for [asynchronous rendering](#). We are excited about the new features this will enable, and we've learned that some changes will be required to the way we write React components.
 
@@ -24,6 +24,12 @@ Previously, React provided two ways for managing refs: the legacy string ref API
 Version 16.3 adds a new option for managing refs that offers the convenience of a string ref without any of the downsides:
 `embed:16-3-release-blog-create-ref.js`
 
+> **Note:**
+>
+> Callback refs will continue to be supported in addition to the new `createRef` API.
+>
+> You don't need to replace callback refs in your components. They are slightly more flexible, so they will remain as an advanced feature.
+
 [Learn more about the new `createRef` API here.](#)
 
 ## Component Lifecycle Changes
@@ -50,7 +56,6 @@ We are also adding a new static lifecycle, `getDerivedStateFromProps`, as a safe
 
 `StrictMode` is a tool for highlighting potential problems in an application. Like `Fragment`, `StrictMode` does not render any visible UI. It simply activates additional checks and warnings for its descendants.
 
-
 > **Note:**
 >
 > `StrictMode` checks are run in development mode only; they do not impact the production build.

examples/16-3-release-blog-create-ref.js

@@ -1,19 +1,19 @@
 class MyComponent extends React.Component {
   // highlight-next-line
-  _divRef = React.createRef();
+  divRef = React.createRef();
 
   render() {
     // highlight-range{4}
     return (
       <input
         type="text"
-        ref={this._divRef}
+        ref={this.divRef}
       />
     );
   }
 
   componentDidMount() {
     // highlight-next-line
-    this._divRef.value.focus();
+    this.divRef.value.focus();
   }
 }