To be honest, I really don't think anyone has a clue. I think the problem is that it's being published by two different people, one for Europe and one for the US. That's the reason it took a aditional six months for SBK 08 to hit the shelves in the US, then when it did they had dropped the 08 moniker and just make it SBK World Championship.
OS seems to think it's releasing this month but no indication if that's includes US, which as far as I can tell it does not. So it may be another six months before we actually see it in the US, kinda like with 08. Only problem with 08 was the fact that US and Europe couldn't play each other online, so the online for that game is dead.