Whenever I have happened to bump into any of those self-styled "insiders" who mysteriously spring up on video-games forums just before Nintendo consoles' reveals from Gamecube onwards leaking infos and tech specifics, I have just made a few logic considerations.
First and foremost, how many people work in the games' industry? Thousands, perhaps many more? Then, how come we haven't more leaks around, apart from the odd freshly new registered poster who comes out of the blue claiming himself an insider?
I can possibly come out with only an acceptable answer: there's no leaks because who's in the know don't sign up on a web-forum just to leak secret infos, unless they wanted to lose their job at the very least; I assume there's some gaffers who work in the industry, but if it is so they are discreet posters who don't compromise themselves speaking more about secretive stuff than they're allowed to.
The bottomline is, if a poster - and more so if it's a junior - comes out of nowhere stating something that has no corrispondence with all the things we've heard from many other sources, regardless of whether positive or negative talks, as a general rule I tend to mistrust them and wait for more reliable sources.