If you read that article, it only refers to the AUS release by Paramount Australia.
We might not be even getting a BOBW single disc release. The release date for S3 might also be different for the US.
The BOBW disc is for worldwide release as far as I'm aware. Regarding the release date - as I mentioned in the article, US/European dates may differ by a few days either side, but I wouldn't expect a huge difference.