Uhm its important not to leave out that this “exclusivity” is only in the European region.
It'll be released in the North American region at the same date (June 16) as the 360 & Wii versions.
Last I checked, that's what is being assumed. It was the UK IGN site that put up the annoncement but it's neither been confirmed or denied for the North American version yet. Still though, regardless of where in the world it's happening, it's a big bonus for PS3 fans.