I guess it's like a kage bunshin... Once you release it all the experience goes back to the original soul I guess...we cant know yet but lets assume (and hope) the kages are going to the battlefield or there will be a different sort of interaction between the kages and naruto. now i wonder, is this edo minato linked with the one who showed up when naruto fought pain? it cant be because it was chakra he seperated from himself and sealed into naruto but on the other hand i dont think kishi is going to repeat a "first" meeting. what do you think?
but didnt itachi kill him when he came out? and if i remember correctly he said he saw what was happening when he was in anko.He wasn't dead, he was absorbed. Basically, his consciousness lived on from within Sasuke.