Square Enix has updated the official Kingdom Hearts HD website with the trailer from Tokyo Game Show 2012. The trailer gives us a look at the collection, including what appears to be an updated battle system for Kingdom Hearts 1 (switching the bottom command into a triangle command).
The collection also features HD cutscenes from Kingdom Hearts 358/2 Days which this shows off.
Kingdom Hearts HD 1.5 ReMIX will be available in Japan in 2013, likely with a release in Europe and North America to follow.
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