FWIW the new box still says "Dual layered synthetic media..."
I just received (11/16/2021) my Amazon shipment of 3 filters:
XG3980 date code A10983, box © 2019, can © 2017, box has "Durable Metal Screen"
XG9100 date code A11411, box © 2019, can © 2017, box has "Durable Metal Screen"
XG10575 date code A12641, box © 2020, can © 2019, box has "Perfect Seal™ Gasket" in place of "Durable Metal Screen"
The XG10575 I just pulled off was in the new box and has date code A11863 received 08/10/2021 from Amazon
The other XG10575 I have on the Buick also in new box has date code A11473 received 07/01/2021 from Amazon
For kicks and giggles I looked inside the filters. ALL of them have a metal screen.