So we either need some to be available on the Revomaze site (which may breach any agreements) or a friendly USA Revomazer who can forward them on. That page says they can accept an International payment for delivery to the USA.
Canadians can order them and have them delivered to a brokerage on the USA side of the Canada / US border. They may charge $5 to hold it until you pick it up. I use Kinek in Port Huron, MI.
Copper and Gunmetal are definitely new mazes. I was running under the assumption that they were different mazes. But they could be the same new maze. That might get them around the Marbles exclusivity, i.e. only the color is exclusive.
If this is another new maze, it is BIG news for me and it will be so fun. I just thought it was like for the Isis puzzles with exclusive colors for the Marble Store.