One of my non gaming websites, Huffington Post, talks up Cuphead on their Tech Page: http://www.huffingtonpost.com/2014/06/23/cuphead_n_5522369.html
I actually thought about Kingdom Hearts when I first saw this game. It's been a long time for me so I can't remember the details, but there was at least one part in that game where you went into a place that had a similar graphical style.Reminds me of an old Disney cartoon.
When I saw the trailer, I thought it was a canned promo piece. Didn't think it was the actual game.It's stunning how accurate they nailed that cartoon style. Kudos to the team!