Woulda been nice to see an orange one too, or to see these colors in the 1520.3 variant. Looks like it brings nothing new as far as internals (AT&T variant with 16GB internal storage and no Qi), but I'm sure some will opt for the green over other colors, or perhaps even swap their existing color for the new bright green.
AT&T begins selling Green Lumia 1520 with 16 GB for $199 | Windows Phone Central
AT&T begins selling Green Lumia 1520 with 16 GB for $199 | Windows Phone Central