A new update has released for Dark Souls III - it "fixes some bugs", "addresses crash issues", and "provides Steam Deck compatibility." Unfortunately, this update breaks existing mods.

Official announcement available at the following link:

https://steamcommunity.com/games/374320/announcements/detail/3656393454659154049

Surprisingly, FromSoftware has reactivated online features for the Vanilla (DX9) base version of Dark Souls II! Please see the following link for the official announcement:

https://store.steampowered.com/news/app/236430/view/3487504264405000450

FromSoftware has finally reactivated online features for Dark Souls: Remastered!

FromSoftware has reactivated online features for the PC Dark Souls II: Scholar of the First Sin (DX11)! Online features for the base PC (DX9) Dark Souls II will be made available at a later date.

Dark Souls III's online features have finally been reactivated! While Dark Souls I (Prepare to Die and Remastered) and Dark Souls II (Vanilla & SotFS) remain offline, we will inform when they are back in service. Please see the official announcement for further details:

https://store.steampowered.com/news/app/374320/view/3249930904619743016

EDIT: Further, FromSoftware has stated RCE vulnerabilities have been "resolved."