Unfortunately, I doubt it'll ever happen...

However, from what I know of.... Lv 90 elite instances has the 3 sannin, Deidara, Tobi, Ningendo, and Kazekage Gaara, from what I know of.

Of course we're still missing the Gaara, Ningendo, and Tsunade (sannin) ones, but they should come...in time

Just wait for lv 95 instances, unless someone messes it up, it should be good!

P.S.-Ningendo is pretty good though, immobile chase, chakra drain. I managed to 5* him yesterday thanks to elite! :D