The first day-and-date 3D Blu-ray release in the world will come from an unlikely studio, with an unlikely title - and outside the US. On August 10, the German branch of Warner Home Video is releasing Clash of the Titans in a two-disc edition, with one disc for the 2D version and another for the 3D. There is no information regarding region coding, but WHV doesn't usually region-lock its titles.
In the US, this movie comes out next Tuesday in a 2D-only edition. There is no information regarding a 3D release. In Japan, this movie will be bundled with 3D-compatible Sharp Aquos TVs.
It must be noted that this movie was not shot in native 3D, but rather it was converted at a very late stage. The quality of the upconversion was widely criticized and some 3D proponents went as far as decry it as detrimental for the adoption of the format.