Ok, so the title may be a little misleading, but that was lifted straight from the english source for this tid bit. It was originally posted on a French site, before you ask. But I guess, Sony either let slip or something at the Interactive & Digital Entertainment Festival that GoW III (that's God of War not Gears of War) will be at this years E3. If this is true, then the release date that Game Stop has been teasing could actually be about right. Depending on what they are going to be showing off at E3, if they do at all.
Personally, I chalk this up to rumor in general. There is only one original source out there right now and no official word from Sony about this. I mean they only listed a few games (Little Big Planet, Killzone 2, Resistance 2) for what they are bringing this year. But who knows. It could have been a big surprise that someone let out of the bag. Which means, if it is true, some one has some 'splaining to do. Time will tell.
I'll update as I get more solid stuff to work with.