I'm going to keep my macbook air until 13.3" rMBP has a dedicated gpu in it. Clearly too many people and I have seen this happen in the Apple store where everything is set up to perfection where there are too many ui issues with integrated graphics. Even though intel is making great progress in power, there vram is just to low powered to handle pixel pushing screens. vram is critically important to how many pixels a gpu can push instantaneously. The memory of dedicated and integrated are just that far apart and will never get close to dedicated power because integrated uses system memory whereas dedicated has their own memory. System memory has and always will be 2-3 generations behind dedicated memory. It has been like that for years and i don't see that changing in the near future. They need to at least put a 840m in there. 920m in the future maybe. I would consider the 15 inch but its to big for me to be mobile after using my 13.3" MBA for so long.