Well, it's real now: http://www.dpreview.com/news/2012/01/06/NikonD4launched
This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.
One thing Canon could do is make auto clean work a little more often. How about after every lens change, and every couple hundred photos if there has been no change.
How about every time you switch your camera on/off? That's the default on the cameras I've used.