[quote=@Ollumhammersong]
ya, generally the 'core' 3.5 game. is just referring to information and options presented in those three books in an effort to keep things simple.

PHB2 offers some neat class variants, not huge things just minor cool things. A couple new classes and feats.
[/quote]

Curiosity compels me to ask about the classes in that book. If I was a cat, I would be dead.