This code added a new mobile and desktop component but of course not many details regarding this next-generation Intel graphics processor have been revealed. Within the code this new chip is currently referred to as IGDNG, which we take to mean Intel Graphics Device Next Generation.
Recently more work for IGDNG has landed within Intel's mainline DDX driver tree. This latest work adds a new shader compiler program for this next chipset, X-Video support for this new product, 2D composite support, and more.
For more information or to look at the code differences, check out the Intel driver's commit log.