I was told by Speck on facebook that the rubber mixture has been redone so it doesnt flake now... take it as you will:
http://www.facebook.com/photo.php?f...13464052039.127740.64753627039&type=1&theater
I've had a white Candyshell on my phone for a month and I have no flaking. My case is the one with the huuuuuge cutout around the camera, not just the oval, and the rubber still feels smooth and less dry than even the 3gs Candyshells.