It looks like some are experiencing positive results with the 7D AF.
Jerry referenced Rob Galbraith's Beta review of the 7D:
"Based on our esperience with the new camera's AF system so far, it's likely that focus on static subjects is going to be solid. We'll need to give the camera more of a continuous focus workout than this, however, to see if it will be right for peek action sports."
Also I posted a question on:
Bob Atkins - Digital Photography - Camera Reviews - Lens Tests - Canon EOS FAQ - Nature - Wildlife - Gallery
The post is located in the EOS forum. Bob is testing the 7D for publication, but in his response to my post he has provided some comparisons to the 40D.
Marc Schoenholz