Umm... the book is going to be released in Poland, so it surely be translated to Polish. Polish kids don't speak English well at age od 9-11 (Well, there are some who do, like I did when I was 10, but there aren't many...)
Speaking of Translation - Greg, do you know who will translate the info in the book? I hope that the translator isn't the same guy who translated Bionicle.com - he propably does'nt know Polish at all, because the Site is very badly translated. And how much will the book cost?