Treyarch has released a new developer video which details all of the stuff that will be in the First Strike
DLC pack for Call of Duty Black Ops
. The TLDR version is that it contains 4 new multiplayer maps along with one new zombie map. The maps do look pretty cool (I'm digging the Berlin Wall map) but I can see the zip lines in the first map becoming a haven for snipers looking for easy kills.
The map pack will be available on Xbox Live first on February 1st and will set you back 1200 points (i.e. $15).