Oops, false alarm. They actually mailed it and I received it, I just misplaced it. The new card is valid for 3 years.
I tried to readd it to Hulu which worked with the old card but the new card doesn't work. It also can't be added to PayPal or Apple Pay. The quest continues
In the meantime I ended up getting a HSBC China debit card (posted a lot more details in this thread
Banking and Good banks in the PRC Discussion) so I'm all covered