https://www.overclock3d.net/news/software/valve_confirms_half-life_alyx_announcement_plans/1 It's official, Valve has confirmed that they plan to announced Half-Life: Alyx, the company's "flagship VR game" this Thursday at 10 am Pacific time. In the UK, this translates to 6 PM GMT.
Previously, Valve announced that their flagship VR game would release this year, though it is possible that the release of Half-Life Alyx has been delayed until 2020.
Half-Life: Alyx will reportedly act as a continuation of Half-Life 2's storyline, placing players in the shoes of Alyx Vance, one of Half-Life 2's protagonists. The game will be exclusive to VR headsets, lacking a non-VR version on PC or console platforms.
Expect to hear more about Half-Life: Alyx this Thursday.
Pity there is no PC non VR version of the game in my opinion