The DLC launches on Nov. 13 via the Xbox Live Marketplace and the PlayStation Store (in Europe only). Other PSN users will have access to the DLC on Nov. 20.
Below you'll find the complete EA press release list of upgrade packs (cleaned up nicely by the folks at ), along with the pricing for their relevant consoles.
All consoles:
-- Astronaut Pack: Download the Astronaut Suit and Weapon Skin Pack, featuring an amazing Astronaut Suit and new skins for the Plasma Cutter, Pulse Rifle, and Ripper! (US$3.00 / 240 MS points)
-- Big Gun Pack: Download the Steam Punk Force Gun, the ultimate in Necromorph-killing destruction. ($1.00 / 80 MS points)