The long-awaited Deus Ex: Human Revolution is now available for pre-order!  That link takes you to the Augmented Edition, which doesn't really have a good explanation of what 'extras' you get, but it's the one I'll probably be ordering when the time comes.

In addition, the pre-order comes with a niftly Tactical Enhancement Pack, which offers two new weapons--a retro double-barrel shotgun and a futuristic sniper rifle.

UPDATE:  Thanks again to Trekkie, got some info on the Augmented Edition, which includes:

• Bonus Mission
• In-Game Automatic Unlocking Device
• In-Game M-28 Utility Remote-Detonated Explosive Device (UR-DED)
• In-Game Linebacker G-87 Multiple Shot Grenade Launcher
• In-Game 10,000 Extra Credits to Buy or Upgrade Weapons
• In-Game Huntsman Silverback Double-Barrel Shotgun
• In-Game SERSR Longsword Whisperhead Silenced Sniper Rifle
• "Making Of" DVD
• Game Soundtrack
• Motion-Comic
• 40-Page Art Book