That disc art is mighty fine. Cover artwork is great too, but a bit spoilery in my opinion. Definitely gonna pick this up because of how much I love the movie and it'll be nice to have English-friendly special features. Speaking of, I wish Korean (and Japanese) editions with English subs for the feature would have subs for the special features too.
Also, just to weigh in on the big running theme of the thread. We'd all love this to be a digipack, but that mockup is what they use for a gatefold slip. You can tell from the fold that it's not on either side of the spine and on just one. You can see this best in the open pic where the open flap is just on the edge. If it's for digipack, what happened to the spine and where are the trays or sleeves? Anyway, fingers crossed it's a digipack, but I wouldn't hold my breath.