https://www.theguardian.com/games/2019/nov/22/valve-reveals-vr-exclusive-game-half-life-alyx

Game will be first in series since Half-Life 2: Episode 2 was released in 2007

Developer Valve Corporation has unveiled the latest game in the long-dormant Half-Life series, a VR-exclusive title named Half-Life: Alyx, set for release in March 2020.