I doubt Disney Channel will EVER air TMS. They're WAY too busy airing reruns of Hannah Montana and that crappy show about those dancers. And if they ever make a new version of TMS, and put it on Disney Channel, people will go ballistic.
They pulled Hannah Montana off the air completely. And yes, Shake it Up is the Dancing version of Hannah Montana. I really only like both of those shows for the brothers. Those segments are just fun and wacky without trying too hard. Jessie, on the other hand, is pure and total suckage. Not to mention I really really really dislike the actress who plays her. But to get this train back on the tracks...
If there is even one iota of a chance for TMS to air again, it would be on ABC family. Most certainly NOT on Disney Channel. I mean, I'm sure there are wacko parent groups who would protest due to extreme slapstick violence :/