From "unknown" you can deduce no information was given about those two territories. The fact that a date ONLY appears for PAL means that no info was given for elsewhere. The fact that this game's release is in so much fog and that a date is only tentatively given from site to site ONLY for PAL release is pretty bad for the other territories.
I've seen the same being done for Monster Hunter Dos (Which ended up as a Japan only release, the "CANCELLED" status appearing a full year after the game's release in Japan).