It's GDC time again and PC gamers are in for a treat. As expected, Valve is making a big splash but it has more than just virtual reality in mind. To push the PC gaming industry even further, Valve is announcing the availability of the Source 2 engine, which any content creator can get their hands on. It has also disclosed a new hardware product called Steam Link for streaming any and all Steam content. Of course, there's also the SteamVR platform and, surprise surprise, Steam Machines.