HTML5 Forms, am I just missing something?

Is there some way of making input type="email" rather that all the other things that you can make the input with #type ?

http://api.drupal.org/api/drupal/developer!topics!forms_api_reference.html/7#type

I would like to make an HTML5 form with an input type="email" for the special keyboard on various smartphones.

Or is the best way to simply change the type with javascript on page load?