Before we give you the trailer, be sure to read through the press release Bethesda just sent our way.

BETHESDA SOFTWORKS ANNOUNCES FALLOUT®: NEW VEGAS™ SET FOR FALL 2010 RELEASE

Official Teaser Trailer for Fallout: New Vegas Revealed Today

February 4, 2010 (Rockville, MD) – Bethesda Softworks®, a ZeniMax® Media company, today announced that Fallout®: New Vegas™, the next chapter in the critically-acclaimed Fallout franchise, will be available in Fall 2010. The game is currently in development at Obsidian Entertainment for the Xbox 360® video game and entertainment system from Microsoft, the PLAYSTATION®3 computer entertainment system, and Games for Windows. The first trailer, which provides new insight into the game, is now available at fallout.bethsoft.com.

Fallout: New Vegas, the follow-up to Fallout® 3 – the 2008 Game of the Year – brings this beloved franchise to a location onlyFallout could do justice: Vegas. Fallout: New Vegas takes all the action, humor, and post-apocalyptic grime and grit of this legendary series, and raises the stakes.

Now that that’s over with. Enjoy the debut trailer of Fallout: New Vegas.