Hacker Reveals New Xbox 360 Disc Format, Full details

[Nsanity]

Mad55 said:

wow if it can hold close to the amount of space as a blueray 360 owners can get more potential games well in a sense.

According to Eurogamer it adds an 1GB storage which is alot to a developer

http://www.eurogamer.net/articles/digitalfoundry-1gb-360-disc-upgrade