i've been holding out on buying the 15" inch to wait for the 13 inch. but i'm spoiled by the 16GB ram on my MBP where i can do hd movies conversions and multiple virtual system at once, its so refreshing. but the absent of the discrete video chip has disappointed a few peoples, but if it will not offer 16GB ram up grade too then i guess i will have to start rolling dices with the 15" rMBP. if it doesn't offer a 16GB ram upgrade then its just going to be an "over weight" and over priced macbook air with a fancy screen. in my opinion.