I'm thinking of getting a 15-inch MacBook Pro with Retina display, in the configuration step of the Apple Online Store, I get to configure my Macbook before making the purchase, under 'Memory' (RAM) it says "Every MacBook Pro with Retina display comes with 8GB of 1600MHz memory. Please note that the memory is built into the computer, so if you think you may need more memory in the future, it is important to upgrade (16GB) at the time of purchase." I'm aware that the RAM cannot be upgraded as it's soldered onto the logic board. But what got me confused is what it says under 'Storage' which is "Your MacBook Pro comes standard with 256GB or 512GB of flash storage. Please note that the flash storage is built into the computer, so if you think you may need more storage capacity in the future, it is important to upgrade at the time of purchase." I know that the flash storage can be upgraded but why does Apple say that it can't? Keyboard and Documentation; I want an English and Arabic Keyboard (I'm ordering from Apple UAE). I'm confused as to which one I should choose to get both.