The akatsuki statue has 7 eyes opened, however we have only seen 4 captures (gaara, 2-tails, wild one and the old man). Also, Deidara mentions before extracting the ichibi, that they had already extracted 3 of them.
Does anyone have a clue on who were the jinchuriki?
Which one is left, other than Naruto?
I tink the one missing is the 8-tails, and should be long till he comes into scene. Would be cool if he allied with Konoha, and we could see 2 jinchuriki in action, to compensate akatsuki superior force