Motorata said:
I think that its more like a prequel, maybe it will expand on the end but who knows
They straight up announced it's a prequel to HL2, and said they will not confirm anything about a sequel to 2 currently. Which leads me to believe it's a gimmick to sell Valve Index sets, rather than give fans what they want. Not that I think this new VR venture will be a bad game, by any means.