Call of Duty 4 playlists in production. Fans will be disappointed to hear that we still don't know when the new playlists will actually be implemented. Still, fourzerotwo drops some info on new playlists and where they currently stand as far as testing. One interesting note is that there are some playlists in testing that would actually require a patch to implement, which may be more than Infinity Ward's current schedule can handle. Still, there are some playlists that might not require a patch, so we're hopeful that we'll actually get to see them soon. Check out descriptions of each new mode at fourzerotwo's blog. (be sure to check out Hardcore Ricochet, in which friendly fire damage is reflected back to the team killer).