They're playing it on a debug/dev box

There is a second xbox coming out but it just ups some stuff,

it also has a kick ass hard drive...


In other words the thing on the right is a pelican,
direct all complaints to my Wii which let me view it nearly full screen on a nice big tv,

which makes it safe to assume that the thing on the left is a banshee.

~EDIT~
Although my pc shows it less purpley... it looks like the thing on the left is just another pelican