I doubt MoP will EVER be on eternal realms. Or if it is, it will not be for a long time to come. They need to work out many buggs first. And we arn't even finished with the cata patches yet. So I would not count on it for awhile. And honestly, who would want to play? with the horrible talent changes. At least thats my opinion.
If I have seen more than other's, it is because I have stood on the shoulder of giant's -Sir Isaac Newton IGN'S Tameraine 6.1kgs mage FROST/FIRE Zrigrand 4kgs warlock AFFLI/DEMO Killuminates 6.1kgs hunter MM/BM Temeraine 5.4kgs shaman ENHANCMENT
nr.1 it is not even close to being released so dont worry yet nr.2 There are chanses as eternal-wow will be on pandria. nr.3 Ofc eternal-wow was first on cata to be private server so we will see who will be next to MOP