Mossy Stone Brick

Mossy Stone Brick is a new block type that may be included in the 1.8 Beta update. Nothing has been said about it yet, besides its name, and even that is subject to change. Mossy Stone Brick is suspected to be one of the materials that are going to be used in the Strongholds, will be included in the 1.8 update. It is possible that this might be a state of the Stone Brick.

Trivia

 * It appears that, as of 1.8 pre-release, these blocks act like mushroom cap blocks, generating a differing texture once via location.