GameFly, which is the largest rental video gamer retailer in the world today listed Call Of Duty: Modern Warfare Remastered on PS4 and Xbox One as standalone releases.
The listings that have now been pulled listed the games for release on July 20th on Xbox One however a new listing shows that the PS4 version will release one month earlier on June 20th.
Currently, the game is still only available for those that play the Legacy or Digital Deluxe edition of Call Of Duty: Infinite Warfare. You also have to own the Infinite Warfare disc to play it from the physical editions.
Whilst Activision has not confirmed a standalone release for Modern Warfare Remastered, it was expected that the game would be released standalone at some point.