Just announced on Capcom's Resident Evil 2 Launch Event Stream. Ghost Survivors is a free content update for REmake 2 that will be hitting post-launch, no date yet, but it's a new game mode where you can play as multiple characters, it'll be a mode with randomized elements, an in-game shop (not micro transactions, earn points in-game by performing well), and should be very replayable they say. Hints it might be like a randomizor/rogue mode, but no 100% at this time. Confirm that Robert Kendo, a USS Member and Katherine (mayor's daughter) are playable in it, surprisingly the characters from the main game not confirmed playable at this time (but say more characters to be revealed).
More info to come soon.
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SLIGHT UPDATE: Not much more, but this mode seems it'll be dished out in volumes over time, three volumes, the first one will hit at an unknown date, have Kendo, a USS Member, and Katherine playable. The mode may have a loose "alternate reality" story mode and randomized rogue-like mode, but it's a bit unclear right now. Confirmed this first volume will include a brand new enemy that's not in RE2 normally, and again is a free content update.