Well supposedly the June issue of EGM was supposed to contain that confirmation. I have it sitting here(The Splatterhouse cover), and it doesn't have a thing about it. Here's the links about it:
http://ve3d.ign.com/articles/news/38297/BioShock-Hitting-PS3-This-Summer-Says-EGM
http://www.shacknews.com/onearticle.x/52404
I believe you're basing this all off of the fact that EGM put something in their rumor section in the June issue, but that's not confirmation, even though EGM has a good record of getting rumors corect. Overall I would say it's likely to come, but don't take this OP as a gospel but as rumor still. I'll re-print the rumor from EGM word for word here:
Not so BioShocking
Bioshock's on-again, off-again relationship with the PS3 has finally stabalized, and the game should finally see release this September. Expect all of the downloadable content to be included, along with marginally enhanced visuals. You'll also catch the first glimpse of Bioshock 2 around the same time...and despite rumors to the contrary, neither Sony nor Microsoft has locked up platform exclusivity for the sequel.
Note from Onyx: From the Rumor Mill.
Tag: Became a freaking mod and a complete douche, coincidentally, at the same time.
