Files inside the Source Filmmaker beta, of which I am proud to be a tester, refer to a new Source engine:
Return an str with the current engine version. If key doesn’t doesn’t exist, assume ‘Source’, otherwise invalid — assume next-gen ‘Source 2’
I’m not qualified to say this, but I’m going to assume that Valve is about to release a new Source Engine. The Gold Source engine was introduced for Half-Life and the Source Engine was introduced for Half-Life 2. So if they’re bringing out a new engine, are they bringing out a new Half-Life?
I don’t know; I can’t make that call.