Angular 12 new features
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1 - Ivy Everywhere: Angular v12. The View Engine has finally been deprecated in Angular version 12. ...
2 - Migrating from legacy i18n message IDs. ...
3 - Protractor: planning for future. ...
4 - Nullish Coalescing. ...
5 - Improvements in styling. ...
6 - Deprecating support for IE11. ...
7 - Support from the Community. ...
8 - Conclusion:

Angular 11 - Features & Updates
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1 - Updated Hot Module Replacement (HMR) Support. ...
2 - Updates on Operation Byelog. ...
3 - Automatic Inlining of Fonts. ...
4 - Component Test Harnesses. ...
5 - Updated Language Service Preview. ...
6 - Faster Builds. ...
7 - Experimental Webpack 5 Support. ...
8 - Moving to ESLint.

New Angular 8 Features!
1 – Angular Ivy. For over a year, the Angular Team has been telling about their new Ivy renderer, so it is obviously the major part of the Angular 8 update. ...
2 – Router. Location. ...
3 – Forms. ...
3 – Support for TypeScript. ...
4 – Service Worker. ...
5 – Support for Bazel. ...
6 – No More @angular/http. ...
7 – Builders API.

new features of Angular 9:
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1 - Smaller bundle sizes and augmented performance.
2 - Faster testing.
3 - Better debugging.
4 - Improved CSS class and style binding.
5 - Improved type checking.
6 - Improved build errors.
7 - Improved build times, enabling AOT on by default.
8 - Improved Internationalization.