It is actually a developer chat trailer voiced over in English. Don't ask me why a male voice was used for the nice Korea lady.

ASTA is developed by Korean studio Polygon, under NHN Corp (or Ijji in the States).

Apparently NHN is look for partners to license the game etc over at the event.

Oh, ASTA is developed using CryEngine 3.

More info, screenshots and old game footage here (link).