title: Is WKWebView designed as a replacement of UIWebView?
body: <p>Asking this questions as I am not sure why Apple introduced WKWebView without deprecating UIWebView. It is important to have an idea as I am programming a large code base and need to make an informed / fact based decision.</p>
  
  <ul>
  <li><p>Are there any reason for which we may have to expect both classes to co-exist in the future and none get deprecated?</p></li>
  <li><p>Is WKWebView purely designed for speed performance (using JIT) and will likely to serve only for certain use cases? </p></li>
  </ul>
  
  <p>Current limitations of WKWebView:</p>
  
  <p><a href="https://mail.mozilla.org/pipermail/mobile-firefox-dev/2014-December/000993.html" rel="noreferrer">https://mail.mozilla.org/pipermail/mobile-firefox-dev/2014-December/000993.html</a></p>
  
  <p><a href="https://stackoverflow.com/questions/24464397/how-can-i-retrieve-a-file-using-wkwebview">How can I retrieve a file using WKWebView?</a></p>