A video broadcast to U.K. Xbox Live subscribers confirms suspicions that Left 4 Dead 2's "The Passing" DLC won't be available by March 31, with the date moved to a more vague "Spring." But it will cost 560 Microsoft points.
The U.K.'s Xbox Live team says Valve officially confirmed the pushback and the price to them. Other details shared about the DLC: There'll be an M-60 anti-personnel rifle, (which Crecente alluded to earlier) that supplies heavy firepower but can't be reloaded. A golf club is added as a melee weapon. And you'll encounter a "bride version" of the Witch special infected.
Skip ahead to 0:48 of the video at the link to hear the news.
SENTUAMESSAGE in HD 27/03/10 PART 1 [YouTube, thanks Paradox Viper]