[humanpuff69]

Not quite sure what you meant there, you said they're testing VR market through Alyx, and might release HL3 if it does well..Do you mean to say HL3 would be a VR dedicated game too? I think that thinking would be a little bit far fetched because as good VR might be, Its still not widely available(not to mention still relatively expensive), for a game as anticipated as HL3, I think It would be idiotic for Valve to release it as a VR title as of yet.

Probably . But

Because the writer of episode 3 quit valve . The story is probably about the half life 3 (after episode 3) . Episode 2 probably will stuck on the cliffhanger forever . But there is fan project called project borealis that try to creat episode 3 based on epstile 3