That could be it. I mean the leaker might have been gamefreak themselves, because a lot of the info is pretty detailed for an average tester to be able to spot. I get this feeling that gamefreak/leaker "corrected" it to bring up the discussion and hype before the game is released, without spoiling too much so future reveals are more surprising. Pokebeach might not have been wrong. It's a typical strategy that a lot of other gaming companies uses.
I've been thinking the same thing. That would explain why most of the leaks have been confirmed PRIOR to the release of the game. I would think a real beta tester would tell us a lot of things that wouldn't be confirmed prior to release.
Alternatively the leaker might somehow have information about what GF would/will tell us about the games before the release. Or it may just be a odd coincidence...:confused: