Lol there is some translation problems when talking about Sasuke's sword. Technically Sasuke and Oro's sword have the same name but they're obviously diffrent. Oro has "the" Kusanagi sword and Sasuke has "a" Kusanagi. Kind of his own version although they are diffrent. (Sasuke's dosen't stretch as far as we know)
Now I'm assuming that you are suggesting Naruto will get Oro's version. I doubt this. If anyone has it it's probobly Kabuto. Honnestly I think Naruto will get a sword (he's assosiated very closley with them in manga covers, which Kishi likes to forshadow things in). There was a theory made about Itachi giving him a special sword although I fail to remember the name. And if he does get one I do think Killerbee will teach him.