The thing people need to keep in mind is just that Square won't confirm that the demo will (or won't) be day and date with Type 0, so it probably won't. It'll be a code in the box that later you can redeem for the demo when it comes out. IE, there may still be months of waiting, potentially, for an actual demo release. I still have a download code for access to the beta of "the next Command & Conquer game" from buying the C&C collection...! That never happened at all. That won't happen here, but there may be a wait, so temper yourselves!
Either way, pretty awesome, mind.