3ality Digital are releasing a 3D (visual & Audio) film of U2 on stage. Dates for the UK cinema general have been set for a major release in late February.
According to their website (U2 3D: The First Live-Action 3D Concert Movie ) the 3D effect is achieved without needing ‘gimmicky’ tricks. Presumably by gimmicky they’re refering to the old fashioned colour glasses.
3ality’s website doesn’t explain how it work, but does quote a number of journals which have made glowing reviews of it.