Electronic Arts has been very clear about its intention of kicking some holiday ass this year in the release showdown between its own Battlefield 3 and Call of Duty: Modern Warfare 3. Microsoft frequently touts its "first on Xbox Live" exclusivity with the Activision series' DLC, and now Sony will be able to do the same for the EA game.
DICE confirmed in a PlayStation Blog post that "all full-blown upcoming expansion packs for the game will appear one week early exclusively on PS3." So that's happening. It's a much slimmer lead than the month-or-so that Call of Duty fans wait. Probably a smart move on EA's part to avoid pissing off Xbox 360 and PC gamers TOO much.
The initiative will kick off with the Back to Karkand map pack, which is included for free with all pre-order purchases of the game. There's no word on whether the pre-order bonus folks will have to wait as well, but the DLC will be released for purchase one month after the game's October 25 launch.