All I can say is that I'm very happy with the decision to give them a simultaneous worldwide release. It's going to be refreshing to see all of the new Pokemon as I encounter them, rather than seeing them online first and waiting several months for localization so I could try them out for myself. Every encounter will be a nice little surprise. I haven't had that since Gold and Silver!
So, I don't plan to scour the Internet when X and Y are released in October (or possibly leaked before release day like B2/W2 were

). I don't want to see the games laid out for me, and I don't want to pick my favorite new Pokemon from someone else's list. I want to discover them all on my own, and I couldn't be more excited to do so! (Except maybe the hidden legendaries... I'll probably look those up like everybody else

)
I have a feeling that Fennekin is going to be very, very popular...