well, now that my favorite thread is closed, i guess i'll spam here.
anyway, regarding any possibility of a EZFA 512Mb cart, previously Borden had said on a chinese site that making one would be, well, economically unsound, meaning that to make one using the same methods as the 256Mb cart would not make any sense, and render it too expensive as a product. much like what we all think about the price of this ultra cart.
however, borden did say that they are looking into other methods to make a bigger and more affordable cart (bigger as opposed to 512Mb at the time). this was around...two months ago i think.