Industry insiders and leakers say Valve is gearing up for a major announcement this week. The company could unveil its next VR headset, the Steam Frame, this week. Valve could also finally announce Half Life 3, rumours say.Industry insiders and leakers say Valve is gearing up for a major announcement this week. The company could unveil its next VR headset, the Steam Frame, this week. Valve could also finally announce Half Life 3, rumours say.