I also heard that in Japan, they are releasing a steel version of the PS3 with MGS4.
icestar2 - I think it is due to backwards compatability, but hopefuly with more updates, they can address this issue.
Steel Ps3
First picture I have seen of it and it doesn't look that great tbh. Would love the satin silver version.
Also (slightly o/t) you can get skins for your PS3
here