True but you can still get an old drive to fit a new slim if you dont mind a little work to do so ;
http://www.youtube.com/watch?v=OeN1sKaNSuc
*Not me in the video*
Because my post that was actually related to the Xbox being won was deleted, I'll post it again.
I don't really see why they thought it would be a good idea to take a step back with the new hardware. Why would you remove a perfectly good feature and force people to void the warranty to just put a new hard drive in? it's pretty stupid. 4GB is not nearly enough to do anything these days, when you consider DLC can be upwards of 500MB in size.