As we reported last month, an internal document leak hinted at the development of both Left 4 Dead 3 and Source 2. Well it looks like more concrete evidence has surfaced.
As reported on IGN, during a tour of Valve’s Seattle office, an anonymous person snapped this photo:
If this is truly an internal database, then Left 4 Dead 3 and Source 2 are all but confirmed. (We are not saying they are, but it seems likely)
Source 2’s development is not surprising, as the original engine is nearing a decade old. Left 4 Dead 3 on the other hand would be a pleasant surprise, as the company has been mum in regards to its in development projects.