Come on, you know Microsoft presentations. How many times have you been to GC? Would this company announce a product in such a ragged manner? Quote: No large non removable disk is announced.
That really is a shame, considering the limitations the stock HDDs already can bring. Of course, if you don't mind voiding your warranty... Most curiously is how quickly it was dismissed. The 360 has a semi-modular design, leading to the idea that Microsoft does seek to sell (more)add ons in the future.