Suggestion/question for improving datePublished example schema.org

Hi all,

I posted a question about this topic here a while ago:
https://productforums.google.com/forum/#!msg/webmasters/Xm5l4KFP9yg/vFZ5wIzGx6IJ
(with
no reply/anwer).

On schema.org I find this example:

<meta itemprop="datePublished" content="2011-04-01">April 1, 2011

However, on w3.org I learn this:


<*time* *itemprop="datePublished"* *datetime="2009-08-30"*>yesterday</time>


I do think myself the last one is more appropriate HTML. Is it an idea to
put this to the list for improving the example on schema.org?

Kind regards,

Willem-Siebe Spoelstra