From the article "Millions of Xbox 360 owners in Britain and Ireland" Pretty sure this means it's just us in the UK. Bare in mind that the US only has had access to netflix for quite a while now. Personally I'm more interested in the pricing of this service, the post says "no cost to existing subscribers" but I can't find any evidence of this anywhere. As an existing subscriber I think it should be free but I doubt it will go that way.