Assuming you mean the desktop module, it will fit in the soft case for the OB-6/Prophet6 but since it's not as deep as those two, you may want a small towel or piece of foam to make it snug. The width is the same as the OB-6 (and I assume P6), as is the depth. But the Rev2 is a thinner module than the OB-6.
I tried putting my Rev2 in the OB-6 case, fit perfectly, but not as "thick" as the OB-6.
As for the keyboard version...I don't have one...so no idea here.