Well it should have already.
I know that Australia (where I live) got it a few days before the US.
It was shown on Cartoon Network. I still have it IQ'd on my Foxtel (cable) box....I also have the Darkrai Movie on there also (but no Giratina/Skymin movie (crys)).
We have the Giratina movie but It is not out on DVD it is just on TV so I have not seen that.I live in Scotland and it has not been shown on TV.Sadly, I am bursting to see it both movies.