Bethesda just updated Doom to version 6.66, creating a direct rift to hell that unlocks all the DLC to players for free. In addition, the update chances up the game's level progression system in a big way.
Version 6.66 unlocks the multiplayer DLC, bundling it with the core game. However, the biggest change appears to be in regards to Doom's levelling and item unlock system. Prior to the update, players would randomly unlock guns and equipment. Now, specific items and customizations are tied to specific level requirements and challenges, so players can work towards specific items or guns knowing fully what's required of them. By removing the guesswork in item drops, Doom players can expect a leaner, more streamlined experience.
In addition, the new update resets veteran players to level 0, but it's not the end of the world. "All veteran players will have the option to completely reset their unlock progression items and experience the new progression system fresh," writes game director Marty Stratton, "OR retain all of their existing guns, equipment demons and customization unlocks that they've acquired or purchased and then unlock the remaining items through the revised progression system."
Whether or not you're a badass veteran player who chooses to reset their gear, Bethesda will reward players with a special badve "recognizing their previous experience in the game." There's even a special Slayer badve for those who've reached max Slayer level.
The hell update also changes to the HUD, replaces the Hack Module, adds a Runes System, and a bunch of other changes. Basically, this 6.66 update is like a Christmas in July for Doom players.