Movies: Surround Lighting

They do 5.1 and 7.1 audio. I'm wondering when 2.1 or 4.1 lighting will be available? Even if just in the movie theaters to start. I saw some reflections during a shootout while watching Bangkok Dangerous, and it was cool. Looked like the gunfire was coming from my side. I now have 5.1 surround, so seeing those slight reflections... talk about total immersion!

The .1 would be the main screen.
2. would be sides-front
4. would be sides-back

Perhaps then there could be a .2, with the second primary directly behind the audience.