Ember.js v4.9.0 is now released. Ember.js is a JavaScript framework that drastically reduces the time, effort, and resources required to build any web application. It strives to make developers as productive as possible by performing all the common, repetitive yet essential tasks involved in most web development projects.

The specific updates are as follows:

• #20274 [BUGFIX] Add some missing types to preview types
• #20256 [BUGFIX] Ember array’s Correct type
• #20257 [BUGFIX] fixedgetOwnerand the type of GlimmerComponent
• #20233 [BUGFIX] Include package name in deprecation error messages
• #20235 [BUGFIX] Updated for TS 4.9 issue@types/node
• #20238 [BUGFIX] Update Node.js version to match support policy
• #20227 [BUGFIX] Fix unsafe internal conversion for NativeArray
• #20228 [BUGFIX] Remove ControllerMixin’s type export
• #20203 / #20204 [FEATURE] Preview Types: Updated to Typescript 4.8

Update instructions: https://github.com/emberjs/ember.js/releases/tag/v4.9.0