ng add command
ng add is a new command in Angular-CLI that helps you install and download new packages in your angular apps. It works the same as npm, but it doesn’t replace it.
ng update command
ng update is a new Angular-CLI command too. It’s used to update and upgrade your packages. It’s really helpful, for example, when you want to upgrade from Angular 5 to Angular 6, or any other package in your Angular app.
providedIn property
Now with Angular 6, you can provide your service inside the supervisor itself by putting the providedIn:root property within the “@injectable" decorator.
ng-template directive
You can use ng-template to render the HTML instead of the template tag in the new version of Angular. ng-template is an Angular element, and it works when it is used with a structural directive such as *ngFor and *ngIf
Angular elements
Angular 6 introduced us to Angular elements. You’re able to render your Angular elements as native web elements, and they’re interpreted as trusted HTML elements.
RxJS 6.0.0
Angular 6 uses the latest version of Rxjs library. Now you can migrate the newest features of RxJS 6 in your Angular App.