Good question. according to abelcine in LA , chroizel may be coming up with a new mattebox for this camera. It will probably take advantage of the 16×9 native format of the camera. I personally hope it comes with 4×5.6 trays so I can use the 4×5.6 filters I already have. I understand the follow focus system will be the same. Check in with 16×9 inc as they are the chroizel distributor.
HTH,
Todd McMullen
Flip Flop Films
Austin