It doesn't seem like two minutes since the last Call of Duty DLC, but they've all been good so far, and Map Pack 3 sounds very promising.
The pack will feature three new multiplayer maps, "Battery", "Revolution" and "Breach". There will also be a new Nazi Zombies map called "Der Reise" which translates as The Journey, or The Voyage.
Details on pricing has yet to be announced and the DLC is set to release this coming August.