https://www.youtube.com/watch?v=_6blt8m8-3Y#t=25
Is it just me or does this game look much, much better in X/Y in every way? The overworld looks much better and bigger than X and Y with the more zoomed out camera view!
Japanese release date of September 20 is shown at the end of the video, as well as Japan's pre-order bonus: a Groudon and Kyogre figurine different than Europe. You can also get 12 quickballs if you download the digital file of the game between Nov 21 - and 30th if you live in Japan.