title: Why was Angular 3 skipped, and what are the major differences in Angular 4 beta
body: <p>I just noticed that the Angular 4 beta was released, but cannot find much info on it. I'm making an app in Angular 2 right now and am kind of scared that Angular 4 is what I should be using.</p>
  
  <p>What are the differences? Why did the team skip Angular 3, or have I just been living under a rock?</p>