Paradox Interactive have announced that Hearts of Iron IV is getting a big new expansion in Götterdämmerung on November 14th, and they're bringing the whole Expansion Pass idea from other games to Hearts of Iron IV as well.
Read the full article here: https://www.gamingonlinux.com/2024/10/hearts-of-iron-iv-to-get-an-expansion-pass-plus-gotterdammerung-dlc-releases-november-14