Pre-ordered of course.
JK should never have changed the title of the first book in the US. It ruins the nice clean feel and replaces it with this ugly title, rather than mysterious like usual. As far as I know, in the US or UK, it will be mid-night when it's released but it's great here, 11 in the morning which gives me enough time to shower, have some breakfast and get onto all the Harry Forums and see what it's like. Yup, I'm excited.