I'm not so sure. There are no quotes or references for the statement.
The European announcement made a big deal "the International version is coming to Europe for the first time with its extra content". But the NA announcement didn't mention it at all, and we never got the International version either. Extra bosses, chapters, and gameplay adjustments are big enough to mention. I don't get why they'd mention it in one announcement, and not another, unless the extra content is only going to be in the EU version, not the NA one.
