The content of the email states simply:
Lots of folks have mailed asking about appointment times, etc., with Valve.
Well, we are not showing any titles at this year’s show. So no appointment is needed.
Finding this interesting, I fired off a quick response asking if they will even have a booth. Doug’s one word response:
I found this a little strange, considering that Valve so recently pulled off one of the biggest launches in their history with the almost universally well-received Portal 2. Additionally, people are constantly clamoring for new updates to the Half-Life franchise. For them to be completely silent at the largest event in the industry seems a bit odd.