Valve has just announced that LG will be revealing a new VR headset at GDC this weekend. The fact that Valve is the first to break the news likely implies that it will be using SteamVR/OpenVR and using lighthouse tracking similar to the Vive. The press release from Valve had this to say:
LG Electronics will unveil its first VR HMD prototype at this year’s GDC in San Francisco, CA. Being shown in Valve’s GDC booth, the LG HMD prototype is designed to deliver a high fidelity, next generation VR experience.
During the show, LG will be meeting with developers to collect feedback and impressions as part of its effort to define the first commercial units. Pricing, launch dates, and territories will be announced at a later date.
This is a clear signal that HTC was just the beginning of Valve partners for VR, and there will most definitely be more to come.