I doubt Retina and longer battery life go together so well. The first Retina MBP was really taxing its GPU to achive the resolution. This is most likely better

I doubt Retina and longer battery life go together so well. The first Retina MBP was really taxing its GPU to achive the resolution. This is most likely better but still - double the resolution, 4x the data rate, more shaders and other GPU units required...