Stone Bricks

Stone Brick is a new block type that will 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. Stone Brick's are one of the materials that are going to be used in the Strongholds, which will be included in the 1.8 update.

Crafting
Stone Bricks can be crafted by placing 4 Stone blocks in a square.

Trivia

 * In the file "en_US.lang" is a reference to this block "tile.stonebricksmooth.name=Stone Bricks".