I am slightly confused about this one. For Euro 2008, there was an official unveiling which involved a press conference with Bruno Alves and Ricardo wearing the new jersey. I guess that was the way that Scolari did it. Evidently, the new World Cup home jersey would be released May 1. What I thought that meant was that it would be released officially in a press conference, not just automatically released into stores. So anyway, here are some pictures I found around the internet.
If you are interested in buying this jersey, Fox Soccer Shop, Eurosport, and World Soccer Shop are the safest options.