I received the email, and also to me, it's not clear if I need to take any action. But I'm happy with the alternative they're proposing as long as they are the _Metallic_ Sterling Gray version of this drop's dice. For those wondering what they might look like here's a polyhedral set that are Sterling Gray: https://www.massdrop.com/buy/metallic-sterling-silver-16mm-polyhedral-dice-set