Yeah I'd heard its optional. Thats good, it does look pretty sweet though!
So what exactly is the point of having a game installed if you can't play it without the disc?
What are the advantages to having this?
Looking forward to this, the avatars look a bit camp but maybe they will change or you can change the stance or whatever.
a) Disc not spinning, most will agree the noisiest part of the 360 is the DVD drive spinning too fast in games.
b) Dirty disc read errors, probably 2nd most common error after RROD so now it only has to fully read your disc once when it installs to the HDD.
Can't think of any other obvious benefits, but I am sure there is t least 1 or 2 more that I have missed.
rp2000