The HTML5 input types are great, Opera\'s new built-in date picker is a breeze, and Chrome has at least supported the new input type with a spin-wheel implementation.
<
Like any HTML input field, the browser will leave it empty unless a default value is specified with the value attribute.
Unfortunately HTML5 doesn't provide a way of specifying 'today' in the value attribute (that I can see), only a RFC3339 valid date like 2011-09-29.
TL;DR Use YYYY-MM-DD date format or it won't display