Ryan Patrick O'Hara
Veteran
I think it is enevitable that someone builds a nice fast moderately priced servo cine zoom lens with a good wide to telephoto range. It's a matter of when and not if.
Most Cine-Style zooms are built all manual. The servo would be a third party motor, one like a remote follow focus would use. The zoom ring would be geared, and thus a microforce zoom controller or something similar would be used.
You won't find any lenses made for cinema with a motor built in, like say a B4 mount ENG lens.