Update 4.2.1 is now live in Battlefield V, launching the new Marita map, and adding new Elite skins Ilse and Kingsley to the store (thanks MP1ST). A post on Reddit has the details:

There will be no general downtime for this update, and once it's available for your platform you're encouraged to close any active session that you have, and attempt to relaunch the game in order to start downloading and installing. Servers with players connected who are running the older version will be able to complete their matches, and new servers on the newer version will be spun up as folks queue via Quickplay Matchmaking.

Marita will then go live at 12PM CEST on all Platforms, and we will activate a Marita only playlist at this time. The playlist will rotate between 1 Round of Conquest, and 2 Rounds of Breakthrough (Attack/Defend) on this Map only. Marita will otherwise be included in the full rotations of Conquest, Breakthrough, and Team Deathmatch (appearing after Arras in Conquest, after Devastation in Breakthrough, and after Al Sundan on TDM) at this same time.

Two hours after the map rotations are available, we'll set both Ilse and Kingsley live in the store.

Starting on August 8th, we'll have a newer Marita playlist live for 32 Player modes that switches between Domination, Frontlines, and TDM.