E3 is over, ant Tantalus port is still a mistery.

[episteme]

I don't doubt that it's coming, they already worked on it for 1.5 years when the interview was made.

We had a thread about it not too long ago and I still think that the only somewhat plausible game that fits the criteria would be Portal 3 or Portal 1+2. Valve wasn't at E3.