Time for a source engine 2?

[Firehorse]

I think in the next couple of years we will probably see some major updates to the source engine, since even on Valve's newest games the graphics with the old engine are beginning to feel very dated.

A second source engine could have higher quality textures and lighting with other new technologies and to get it to work well on older systems a user could check a box to just use older graphics with the newer engine. This is just speculation, what are your thoughts?

[Fez]

I think Gabe said somewhere that Episode 3 will be the last Valve game to use the Source.

[Jam]

If that's the case I'd rather wait another year or so for Portal 2.