If GW needs US N3DS consoles - then first the consoles have to arrive at their office.
That can take a week. Depends on where they are in the world.
Maybe the delay has also something to do with Zelda MM JAP, and the firmware 9.x on cartridge.
If they are waiting for this for whatever reason, then also this cartridge first needs to arrive where they are.
So 1 week delay or a little more is no surprise.
Yes it requires 9.4 J. Just tried it on my Sky3DS. Mine is on 8.1, I was asked to update system.
