Maybe they'll release two games on thursday instead...
When they had the countdown, they went through a tuesday without a release, so Gabriel Knight was for the tuesday and arcanum for thursday.
If we don't get anything today, I wouldn't be surprised we'd get two games on thursday. That, or old Activision games are giving them trouble to set up to working status. They admitted that sometimes they have a backup when things don't go smoothly, but you can't have a non activision game on activision month, so if they're late, they can't use a backup.