https://www.pcgamer.com/half-life-VR-rumor-index/
I give it at least a 10% chance that boners fly and old dreams die.
Valve is going to reveal the specs of its VR headset, the Valve Index, very soon, and we have good reason to believe it'll reveal some VR games along with it—one of which is rumored to be a Half-Life game.
Valve told me on April 1 that it was "targeting May 1st for pre orders and a full announcement" of the Valve Index. That plan may have changed (especially because the Borderlands 3 gameplay reveal is also happening this week), but the announcement will probably happen soon, because Valve also told me that it wants to start shipping hardware in June. I've asked Valve if this Wednesday is still the big day, and will update this post if I hear back.
We also know for sure that Valve has been working on three VR games, which Gabe Newell described as full-sized games (as opposed to tech demo-like projects such as The Lab) in February 2017. "We think we can make three big VR games," Newell said at the time. "We think that we know enough now to do that, and we're going to find out if that's the case. We're pretty sure that all the other game developers are going to learn positive or negative lessons from what we do, which is sort of where we have to be right now."
I give it at least a 10% chance that boners fly and old dreams die.