UPDATE: Terminal is coming to PS3 Elite members on August the 14th. It will be available to all regular PS3 members on the 15th of August.
Terminal, a popular map from MW2, will be released for MW3 (XBox) on the 17th of July. I'm sure that MW3 players will be happy to hear that the map pack will be completely free for everyone.
On the 17th, the map will be released for Elite subscribers on the XBox 360. On the 18th, it will be released for non-Elite subscribers.
From what I've seen so far, the map will have a few minor cosmetic changes. For instance, the bookstore seems to have been turned into some sort of electronics store.
The question now is: When will Terminal be released for PS3 and PC? Does the deal that Microsoft have with Activision affect free DLC? My guess is that the PS3 and PC will get it at the end of July or in mid-August.