I'm very excited. Loved the first two games and then missed the third one.
I was getting pretty concerned about Conviction when they showed those first trailers, but since they've taken it in the new direction shown at E3, I'm very pumped again. I even went and bought Double Agent to pass the time.
Turns out it's really good too, though the menus are pretty clunky (glad that everything will transition smoothly in Conviction).