yes, but now its in 1.0.0 its fullversion, no longer in beta
not yet
No.
Not yet you can't, an update for horses in Minecraft xbox has not been released yet by Mojang.
No
Not yet
No
Not yet
Minecraft 2 has not yet been released.
Horses are not a mob yet in Minecraft, but they are available on Mo' Creatures.
No, horses aren't yet part of Minecraft, but they will be as of 1.6 and beyond!
Villagers aren't available on Minecraft P.E. yet.
not yet