I’ve got as much details as you unfortunately. Official site doesn’t provide any info beyond what’s in the trailer description.

This movie contains a heavy amount of CGI so they most likely rerendered the whole thing from scratch, assuming they still have the source files for that stuff.

Edit: I looked around a little bit and while I didn’t find anything official I saw some suggestions this might just be an anniversary screening of the Japanese release from few years ago. Let’s hope we’ll get some more info on that.