A playable demo for DOOM is now available on Steam, offering the chance to check out id Software's new first-person shooter revival (thanks Frans). Though it doesn't seem to be mentioned on the demo page, an update on Bethesda.net explains that this demo is only being offered for the next week in celebration of E3. During that time this offers the ability to play through the entire first level of the game. The website also describes plans to update the game, offering highlights of a planned SnapMap update as well as new multiplayer modes coming next month via a free patch and a paid DLC pack. Here's word on the multiplayer updates:

Multiplayer – Free Updates

In the next month, id Software will release two new modes:

• Exodus: a one-flag CTF mode that Stratton describes as a “uniquely DOOM experience”
• Sector: a multizone capture-and-hold mode

Later this summer, DOOM will also be updated with three additional free-for-all modes, including beloved classic mode. All of these new modes will be playable on any existing or future maps, and will be free for all players.

Multiplayer – Unto the Evil

DOOM’s first premium DLC pack will also release next month. Unto the Evil will include:

• Three new multiplayer maps: Offering, Cataclysm and Ritual
• A new player-controlled demon: Harvester
• A new weapon: UAC EMG Pistol
• New equipment: Kinetic Mine
• New ways to customize your DOOM marine, including additional armor sets, patterns, colors and taunts
• New hack modules