I'm a bit late to the party here, but it's good to see all the familiar names again. As of now I don't currently have any means to play the Japanese version of the game, but I'm excited to see that others will get the chance to again (or for the first time!).
I briefly played the US version of File#2 and spent many months on the first Outbreak until those servers closed. I then got the Japanese versions and played more File#2 then I ever thought I would until those servers officially closed; I have several videos on YouTube to attest to this. To this day I believe the Outbreak titles provide some of the most unique multiplayer experiences for gaming, so it's great to hear news of the games coming back to life.
Hope to see you all around.