From my understanding all Euro5 EEV compliant E400 are having the radiator fitted to the offside. This is not new as it was featured on a demonstrator way back in 2008.
I'm not sure if that Stagecoach E400 MAN-engined though, as the only place I have heard to recieve those things to be Stagecoahc Manchester, which are number quite a bit later in the sequence.