Brandon Grave Heat

I have been wondering that myself I guess we shall see when the other half of inyusha comes to america, I hope that sesshomaru does not fall for Ren when she is all grown up,

Which brings me to another point will sesshomaru arm ever grow back or is that gone for good, I mean i saw where inyasha cut in half rather cut it up from paw to elbow while Sesshomaru was in his wolf fourm.. So i was just wondering if his left arm will grow back?