This is for the Barbarian Mark of Valor unlock, I was awarded the other 4 but not the Barbarian and I have the confirmation email for the Barbarian and here is a copy paste of the text.
The Barbarian Reveal started on April 10 and here is the post by Kaivax at the start of the reveal. http://us.battle.net/d3/en/blog/4864387
Diablo III <firstname.lastname@example.org>; Message flagged Wednesday, April 11, 2012 12:00 PM
Thank you for participating in the Diablo III: Darkness Falls, Heroes Rise Mark of Valor campaign. To reward you for your participation, an exclusive in-game sigil representing your hero has been awarded to the Battle.net account registered with your email address. Shortly after Diablo III is officially released, you'll automatically have access to this sigil whenever customizing a character banner.
Don't forget, each week a new hero will be featured, offering you the opportunity to unlock additional sigils. These items will only be available for a very limited time, so be sure to heed the calling of all Sanctuary's heroes!
Prepare yourself for battle,
The Diablo III Team
To learn more about this promotion, see our official FAQ.
Thanks in advance for your attention to this issue.