Nvidia, AMD, and now Intel. And for some reason, it felt like now was the time to tease the project - without offering any real info as to whether it'll be specced for high-end gaming or simple productivity. Either way it's an interesting move from Intel, and the fact that it'll be dedicated GPU means we can expect something more substantial than Intel's own integrated graphics that come included with its range of CPUs.
So yeah, a mystery that we'll have to wait to hear about more on. The only real info we have so far is that former AMD Radeon architect Raja Koduri joined Intel a while back to work on the project.