Dirt Path

Grass paths are an upcoming decorative block in version 1.9 and Pocket Edition.

Obtaining
Grass paths can be created by tapping and holding on a grass block with any type of shovel.

Natural generation
Grass paths are naturally generated in villages, where they are used as pathways.

Usage
Grass paths are primarily used for decoration. They are a similar color to grass blocks placed in a desert or savanna biome, however a notable difference is they are only $15/16$th of a block high.