The card arrives in February, although it's not clear how much it will cost or how readily available it will be outside of the UK. Don't expect it to be cheap, though -- the 400GB card still carries a premium (around $250 on Amazon), and it's virtually certain that 512GB will cost more. This is more about bragging rights, both for Integral Memory and for well-heeled techies who want the kind of capacity normally reserved for laptops.