A live Broadcast is on for anyone interested. (it's over)
http://live.nicovideo.jp/watch/lv107678312
EDIT: Awesome! Deathblows apparently change the background music when they're activated. Each type of weapon has it's own theme too! The moves shown were pretty cool BTW.
EDIT 2: Friend summoning still looks pretty weird.
EDIT 3: Awww, seems like I was kicked out by a premium user, the game is looking ace though. Hopefully this gets recorded.
EDIT 4: According another forum looks like I missed a quite a lot of cool stuff: Dark Knight reveal, Onion Knight costume dual wielding axe Merchants, crazy new summons.