https://wccftech.com/battlefield-portal-features-maps-from-battlefield-1942-battlefield-bad-company-2-battlefield-3-and-an-impressive-level-of-customization/

Battlefield Portal is the official name of Ripple Effect's top-secret game mode for Battlefield 2042. EA already confirmed (following some leaks and rumors) that it would feature remastered maps from earlier titles in the franchise, but after seeing the developers' presentation, we can safely say that's really just the tip of the iceberg.

First things first, however. Battlefield Portal will include six remastered maps, two each from Battlefield 1942 (Battle of the Bulge and El Alamein), Battlefield Bad Company 2 (Valparaiso and Arica Harbor), and Battlefield 3 (Caspian Border and Noshahr Canals). These have been brought up to the standards of Battlefield 2042. They can all be played up to 128 players on PC and next-gen consoles, and Battlefield 1942 maps also received proper destructibility, something that obviously wasn't there originally.