I think some cases have individual holes for cameras and I don't think that these will fit. The ones with the large camera cutout may be OK. As the sides of the phone are different some cases may not fit well. If you look at Samsung website they have a new range of cases.
I can confirm that they don't, I tried it, the cameras on the back are slightly different positions and the mic on the top part of the frame is in a completely different position.