There's still not a lot to get excited about. It is HL3 related, but that doesn't mean that some old code for a years old build was useful in the DOTA update and, oops, they forgot about the HL3 references. I wouldn't take this as deliberate or a hint, but the video does suggest that Valve employees will be watching to see what people say even if they didn't mean to include the HL3 references in the update. I'm thinking Source 2 when it officially launches with SDK, etc. will come with a killer game to show off all the features. I'm hoping it's HL3. But after trying to Vive I really don't want a Halflife game designed for VR. I just don't think the two would meld well. Valve's games have always had a flare for showing off new tech. I think I can honestly say that most of the Halflife story has also been a parallel story of what game engines can do and what new, amazing thing Valve has invented/added. I am essentially sure that any new installation to the HL series will certainly include some crazy new mechanics, graphics, or tools that we've never seen before. But I just don't think it will be VR, I think it will be something else with Source 2. I can see minigames in the HL universe being fun, but I just don't see HL as a VR-first experience. If anyone can prove me wrong, however, it would be Valve. That said, Chet Faliszek, when asked at EGX about whether or not HL3 would be a VR game , said, "No!"